The Taxonomic Circumscription and Nomenclatural History of Pilosella suecica (Asteraceae): A Special Case of Grey Literature in Taxonomic Botany

The taxonomic history, nomenclature and application of the oldest species names available for the common hybrids between Pilosella caespitosa and P. lactucella are reviewed. Elias Fries created a nomenclatural and bibliographical collision when he replaced a printed label of his exsiccata Herbarium normale with its second version, distributed at a later date, in which the protologue of Hieracium suecicum had appeared. In this protologue, the new species name was validly published with a mere reference to the original description of H. auricula var. majus, thus being based on the type of the latter. In a later fascicle of the same exsiccata, Fries excluded this synonym and distributed a different morphotype of H. suecicum, which caused taxonomic confusion and re-description of the same taxon under the name H. fennicum. The surviving original material of H. auricula var. majus is rejected, and its neotype is designated, making H. suecicum the correct name for the hybrids strictly intermediate between P. lactucella and P. caespitosa. Such hybrids constitute the most common hybridogenous taxon of Pilosella in Scandinavia, Finland and neighbouring Russia, with many synonyms described from this area and partly typified here. Another hybridogenous taxon of the same origin, more similar to P. lactucella and previously known as P. cochlearis, is correctly named P. stipitiflora comb. nov. The nomenclatural value and bibliographic complexity of exsiccata, a commonly underestimated kind of grey literature in taxonomic botany, are further highlighted.

Taxonomy and nomenclature of Oophila amblystomatis (Chlorophyceae, Chlamydomonadales)

The unicellular green alga Oophila amblystomatis was named by Lambert in 1905 based upon its association with egg masses of the spotted salamander Ambystoma maculatum. We collected algal cells from Lambert's original egg capsule preparations that were contributed to Phycotheca Boreali-Americana (PBA) in 1905 and subjected them to DNA extraction and PCR with O. amblystomatis-specific 18S rRNA gene primers. DNA amplified from these preparations was cloned and nine clones were sequenced. Along with representative sequences from the Oophila clade and Chlorophyceae, a phylogenetic tree was inferred. Seven sequences clustered within the Oophila clade and two clustered with Chlamydomonas moewusii, which is included in a sister clade to Oophila. By sequencing algal material from the egg capsules of representative type material we can unambiguously characterize O. amblystomatis and define a monophyletic clade centered on this type material. Accordingly, we reject a recent proposal that this species be transferred to Chlorococcum.

Atlas Florae Europaeae notes, 33. Taxonomic synopsis of East European species of the Cytisusratisbonensis group (Fabaceae)

A group of species of Cytisussect.Tubocytisus with strictly lateral inflorescences, commonly referred to as C.ratisbonensis s.l., is critically revised in Eastern Europe on the basis of morphology and comprehensive treatment of herbarium specimens and observations. Seven species and two presumed hybrids are recognised. Complete accounts are provided for each species, with synonyms, typifications, brief morphological descriptions, data on ecology and distributions, taxonomic and nomenclatural annotations. Cytisuspolonicus is described as new to science, separated from C.ratisbonensis on the basis of morphology and diploid (vs. tetraploid) chromosome count. The lectotype of C.elongatus is superseded and a new lectotype is designated; this name has priority for the species previously known as C.triflorus. Six species names are newly placed to the synonymy: Chamaecytisuspineticola under Cytisusruthenicus s. str., and Cytisusczerniaevii, C.leucotrichus, C.lindemannii, C.ponomarjovii and Chamaecytisuskorabensis under Cytisuselongatus. The presumed hybrid between C.ruthenicus and C.elongatus, which was incorrectly known as C.czerniaevii, is described here as C.semerenkoanus. Cytisuslithuanicus, which has been an obscure name since its original publication, is resurrected for a newly-recognised octoploid species, which is endemic to eastern Poland, western Belarus and north-western Ukraine. The name C.cinereus is re-instated for the species previously known as C.paczoskii, and C.horniflorus is added to its synonymy; its complete distribution area is circumscribed, and its occurrence in Austria, Poland, Romania, Serbia and Slovakia is documented. Cytisuskreczetoviczii and C.elongatus are reported for the first time from Belarus, and the latter species also from Bosnia and Herzegovina, Montenegro and Slovenia. Cytisusborysthenicus and C.elongatus are reported as new to some territories in European Russia. Cytisusratisbonensis s. str. is treated as absent from Eastern Europe. The neglected protologue of C.ruthenicus is discovered, and the nomenclature of all other names is verified and corrected when necessary. The original material of C.borysthenicus is re-discovered. Five further lectotypes and one neotype are designated. Distribution areas are circumscribed on the basis of numerous herbarium collections and documented observations, identified or verified by the authors. Chromosome counts published for nameless taxa from Belarus, Ukraine and Russia are assigned to the species according to their herbarium vouchers: C.borysthenicus, C.kreczetoviczii and C.lithuanicus are octoploid (2n = 100), C.ruthenicus is tetraploid (2n = 50) and octoploid (2n = 100), and C.semerenkoanus and C.elongatus are tetraploid (2n = 50).

Atlas Florae Europaeae notes, 35. Further critical notes on Cytisussect.Tubocytisus (Fabaceae) in Europe

A few species names in Cytisussect.Tubocytisus are re-assessed and taxonomically evaluated. Diagnostic characters are discussed and the species status of C.absinthioides Janka, C.eriocarpus Boiss., C.frivaldszkyanus Degen, C.jankae Velen. and C.smyrnaeus Boiss. is confirmed. The holotype of Cytisustriflorus Lam. was found to belong to C.hirsutus L. rather than to the C.ratisbonensis group as currently treated. Cytisuslasiosemius Boiss. is not the correct name for C.frivaldszkyanus Degen, but another synonym of C.hirsutus. Cytisuslitwinowii V.I.Krecz., which was known solely from the holotype, is a synonym of C.austriacus L. s.str. Chamaecytisuspseudojankae Pifkó & Barina, reported from a small area shared between Albania, Greece and North Macedonia, is treated as a subalpine variant of C.austriacus. Cytisustmoleus Boiss. is removed from the synonymy of C.eriocarpus and added to the synonymy of C.pygmaeus Willd. Cytisusfalcatussubsp.albanicus Degen & Dörfl. and C.pubescens Gilib. are synonymised with C.hirsutus. Cytisusmicrophyllus Boiss. is moved from C.austriacus s.l. to the synonymy of C.frivaldszkyanus, and C.pindicola (Degen) Halácsy to the synonymy of C.jankae. Chamaecytisuscalcareus (Velen.) Kuzmanov is accepted as Cytisuscalcareus (Velen.) Sennikov & Val.N.Tikhom., comb. nov., and its distribution is circumscribed. Cytisushirsutusvar.ciliatus (Wahlenb.) Hazsl. and C.polytrichusvar.subglabratus Val.N.Tikhom. & Sennikov, var. nov. are recognised as glabrous variants of the corresponding species. Lectotypes of C.ciliatus, C.hirsutissimus K.Koch, C.jankae, C.lasiosemius, C.pubescens, C.rhodopeus J.Wagner ex Bornm. and C.thirkeanus K.Koch are designated. Cytisuspolytrichus is reported from the Western Caucasus in place of C.wulffii auct.

The History and introduction of the Daurian Lily Liliumpensylvanicum and the new combination L.pensylvanicum var. alpinum (Liliaceae)

Manuscripts in the Archives of the Academy of Sciences in St. Petersburg reveal the first recorded observations and introductions of Liliumpensylvanicum Ker-Gawl. from Siberia to European Russia. The naming of Liliumpensylvanicum and its attempted renaming to L.dauricum Ker-Gawl. is fully outlined. Lectotypes are designated here for the names Liliumpseudodahuricum M.Fedoss. & S.Fedoss., L.dauricumvar.alpinum N.I.Kuznetsov and L.pensylvanicumf.praecox Vrishcz. The new combination L.pensylvanicumvar.alpinum (N.I.Kuznetsov) J.Compton & Sytin is made and a key is provided to the varieties of L.pensylvanicum.

Lectotypification of two names of Carexbuekii hybrids (Cyperaceae) and notes on their morphology, ecology and distribution

Lectotypes are designated for two Carexbuekii hybrid names. The typification is supplemented with notes on their morphology, ecology, and distribution.

Phytophthora

Many members of the Oomycota genus Phytophthora cause economic and environmental impact diseases in nurseries, horticulture, forest, and natural ecosystems and many are of regulatory concern around the world. At present, there are 223 described species, including eight unculturable and three lost species. Twenty-eight species need to be redescribed or validated. A lectotype, epitype or neotype was selected for 20 species, and a redescription based on the morphological/molecular characters and phylogenetic placement is provided. In addition, the names of five species are validated: P. cajani, P. honggalleglyana (Synonym: P. hydropathica), P. megakarya, P. pisi and P. pseudopolonica for which morphology and phylogeny are given. Two species, P. ×multiformis and P. uniformis are presented as new combinations. Phytophthora palmivora is treated with a representative strain as both lecto- and epitypification are pending. This manuscript provides the updated multigene phylogeny and molecular toolbox with seven genes (ITS rDNA, β-tub, COI, EF1α, HSP90, L10, and YPT1) generated from the type specimens of 212 validly published, and culturable species (including nine hybrid taxa). The genome information of 23 types published to date is also included. Several aspects of the taxonomic revision and phylogenetic re-evaluation of the genus including species concepts, concept and position of the phylogenetic clades recognized within Phytophthora are discussed. Some of the contents of this manuscript, including factsheets for the 212 species, are associated with the "IDphy: molecular and morphological identification of Phytophthora based on the types" online resource (https://idtools.org/tools/1056/index.cfm). The first version of the IDphy online resource released to the public in September 2019 contained 161 species. In conjunction with this publication, we are updating the IDphy online resource to version 2 to include the 51 species recently described. The current status of the 223 described species is provided along with information on type specimens with details of the host (substrate), location, year of collection and publications. Additional information is provided regarding the ex-type culture(s) for the 212 valid culturable species and the diagnostic molecular toolbox with seven genes that includes the two metabarcoding genes (ITS and COI) that are important for Sanger sequencing and also very valuable Molecular Operational Taxonomic Units (MOTU) for second and third generation metabarcoding High-throughput sequencing (HTS) technologies. The IDphy online resource will continue to be updated annually to include new descriptions. This manuscript in conjunction with IDphy represents a monographic study and the most updated revision of the taxonomy and phylogeny of Phytophthora, widely considered one of the most important genera of plant pathogens. Taxonomic novelties: New species: Phytophthora cajani K.S. Amin, Baldev & F.J. Williams ex Abad, Phytophthora honggalleglyana Abad, Phytophthora megakarya Brasier & M.J. Griffin ex Abad, Phytophthora pisi Heyman ex Abad, Phytophthora pseudopolonica W.W. Li, W.X. Huai & W.X. Zhao ex Abad & Kasiborski; New combinations: Phytophthora ×multiformis (Brasier & S.A. Kirk) Abad, Phytophthora uniformis (Brasier & S.A. Kirk) Abad; Epitypifications (basionyms): Peronospora cactorum Lebert & Cohn, Pythiacystis citrophthora R.E. Sm. & E.H. Sm., Phytophthora colocasiae Racib., Phytophthora drechsleri Tucker, Phytophthora erythroseptica Pethybr., Phytophthora fragariae Hickman, Phytophthora hibernalis Carne, Phytophthora ilicis Buddenh. & Roy A. Young, Phytophthora inundata Brasier et al., Phytophthora megasperma Drechsler, Phytophthora mexicana Hotson & Hartge, Phytophthora nicotianae Breda de Haan, Phytophthora phaseoli Thaxt., Phytophthora porri Foister, Phytophthora primulae J.A. Toml., Phytophthora sojae Kaufm. & Gerd., Phytophthora vignae Purss, Pythiomorpha gonapodyides H.E. Petersen; Lectotypifications (basionym): Peronospora cactorum Lebert & Cohn, Pythiacystis citrophthora R.E. Sm. & E.H. Sm., Phytophthora colocasiae Racib., Phytophthora drechsleri Tucker, Phytophthora erythroseptica Pethybr., Phytophthora fragariae Hickman, Phytophthora hibernalis Carne, Phytophthora ilicis Buddenh. & Roy A. Young, Phytophthora megasperma Drechsler, Phytophthora mexicana Hotson & Hartge, Phytophthora nicotianae Breda de Haan, Phytophthora phaseoli Thaxt., Phytophthora porri Foister, Phytophthora primulae J.A. Toml., Phytophthora sojae Kaufm. & Gerd., Phytophthora vignae Purss, Pythiomorpha gonapodyides H.E. Petersen; Neotypifications (basionym): Phloeophthora syringae Kleb., Phytophthora meadii McRae Citation: Abad ZG, Burgess TI, Bourret T, Bensch K, Cacciola S, Scanu B, Mathew R, Kasiborski B, Srivastava S, Kageyama K, Bienapfl JC, Verkleij G, Broders K, Schena L, Redford AJ (2023). Phytophthora: taxonomic and phylogenetic revision of the genus. Studies in Mycology 106: 259-348. doi: 10.3114/sim.2023.106.05.

A taxonomic synopsis of Heliotropiaceae and new combinations in Heliotropium from Thailand

A synopsis of Heliotropiaceae in Thailand is presented and, as part of this, the taxonomic history, identification keys, distribution maps, herbarium specimen citations and diagnostic characters are provided. Two genera and 12 species are recognised and four new combinations are proposed of Tournefortia under the genus Heliotropium, namely H.hookeri, H.intonsum, H.montanum and H.ovatum. Two species are newly recorded in Thailand: Euplocaovalifolia and H.hookeri. The neotype and lectotype are designated here for Tournefortiamontana and T.boniana, respectively.

The Genus Sagina (Caryophyllaceae) in Italy: Nomenclatural Remarks

A contribution to the nomenclature of the genus Sagina is presented. The following 10 taxa are recognized as being part of the Italian flora: S. alexandrae, S. apetala, S. glabra, S. maritima, S. micropetala, S. nodosa, S. pilifera, S. procumbens, S. revelierei, and S. saginoides subsp. saginoides. The names S. apetala var. decumbens (=S. apetala subsp. apetala), S. bryoides (=S. procumbens), S. patula (=S. apetala subsp. apetala), S. revelierei, Spergula glabra (=S. glabra), Spergula pilifera (=S. pilifera), and Spergella subulata var. macrocarpa (=S. saginoides subsp. saginoides) are here typified. Specimens deposited at B-W, C, E, and LY, and illustrations by Reichenbach were considered for the typifications. Specifically, two Reichenbach's illustrations are chosen for S. bryoides and S. saginoides var. macrocarpa. A specimen at B-W is designated as the lectotype of S. glabra. Two specimens at C and G are designated as the lectotypes of S. apetala var. decumbens and S. revelierei, respectively. A specimen at LY is designated for S. patula. As we did not find original material, a neotype at G is designated for S. pilifera.

Resolution of eleven reported and five novel Podaxis species based on ITS phylogeny, phylogenomics, morphology, ecology, and geographic distribution

The genus Podaxis was first described from India by Linnaeus in 1771, but several revisions of the genus have left the taxonomy unclear. Forty-four Podaxis species names and nine intraspecific varieties are currently accepted, but most fungarium specimens are labelled Podaxis pistillaris. Recent molecular analyses based on barcoding genes suggest that the genus comprises several species, but their status is largely unresolved. Here we obtained basidiospores and photographs from 166 fungarium specimens from around the world and generated a phylogeny based on rDNA internal transcribed spacer ITS1,5.8S and ITS2 (ITS), and a phylogenomic analysis of 3 839 BUSCO genes from low-coverage genomes for a subset of the specimens. Combining phylogenetics, phylogenomics, morphology, ecology, and geographical distribution, spanning 250 years of collections, we propose that the genus includes at least 16 unambiguous species. Based on 10 type specimens (holotype, paratype, and syntype), four recorded species were confirmed, P. carcinomalis, P. deflersii, P. emerici, and P. farlowii. Comparing phylogenetic analysis with described species, including morphology, ecology, and distribution, we resurrected P. termitophilus and designated neotypes, epitypes, or lectotypes for five previously described species, P. aegyptiacus, P. africana, P. beringamensis, P. calyptratus, and P. perraldieri. Lastly, based on phylogenies and morphology of type material, we synonymized three reported species, P. algericus, P. arabicus, and P. rugospora with P. pistillaris, and described five new species that we named P. desolatus, P. inyoensis, P. mareebaensis, P. namaquensis, and P. namibensis. Citation: Li GS, Leal-Dutra CA, Cuesta-Maté A, et al. 2023. Resolution of eleven reported and five novel Podaxis species based on ITS phylogeny, phylogenomics, morphology, ecology, and geographic distribution. Persoonia 51: 257-279. doi: 10.3767/persoonia.2023.51.07.

Nomenclature Survey of the Genus Amaranthus (Amaranthaceae): 12 Questions about Amaranthus caudatus

Nomenclatural and taxonomic issues concerning Amaranthus caudatus and the related taxa are presented. Types are designated for names A. caudatus var. albiflorus (neotype at RO), A. caudatus var. atropurpureus (neotype at GH), A. caudatus var. gibbosus (neotype at RO), A. dussi (neotype at NAP), and A. edulis (lectotype at LP). Holotypes are indicated for the names A. caudatus var. pseudopaniculatus f. oblongipetalus (EA), A. caudatus var. pseudopaniculatus f. pseudopaniculatus (EA), A. caudatus subsp. saueri (PR), and Amaranthus edulis var. spadiceus (CORD). The names A. caudatus var. albiflorus, A. caudatus var. atropurpureus, A. caudatus subsp. saueri, A. dussi, and Amaranthus edulis var. spadiceus are considered as hererotypic synonyms of A. caudatus. On the basis of morphological, cytological, and molecular data, the taxa caudatus, mantegazzianus, and gibbosus are here proposed to be treated as different species. A new name-Amaranthus baileyanus-is proposed for A. caudatus var. gibbosus because of a previous and validly published Amaranthus gibbosus.

New Approach to the Systematics of the Section Psammiris (Iris, Iridaceae): What Does Chloroplast DNA Sequence Tell Us?

Iris sect. Psammiris comprises rhizomatous perennials distributed in the north temperate zone of Eurasia. The systematics of the section are currently based on morphology, and the phylogenetic relationships within it still remain unclear. In the framework of Iris systematics, we conducted molecular and morphological analyses of the currently recognized I. sect. Psammiris species to elucidate the taxonomic composition and relationships within the section. The phylogenetic reconstructions based on sequence variation of four noncoding chloroplast DNA regions support the monophyly of I. sect. Psammiris, which includes I. tigridia, while I. potaninii var. ionantha belongs to I. sect. Pseudoregelia. The proposed novel classification of I. sect. Psammiris recognizes three series: an autonymic series with I. humilis, I. bloudowii, and I. vorobievii and two unispecific series (I. ser. Potaninia with I. potaninii and I. ser. Tigridiae with I. tigridia). In addition, the taxonomic statuses of I. arenaria, I. ivanovae, I. kamelinii, I. mandshurica, I. pineticola, I. psammocola, and I. schmakovii are clarified herein. We provide a revised taxonomic treatment for I. sect. Psammiris, including notes on the types; updated information on species synonymy, distributions, habitats, and chromosome numbers; and a new identification key to the species. Three lectotypes are designated here.

The Genus Paronychia (Caryophyllaceae) in South America: Nomenclatural Review and Taxonomic Notes with the Description of a New Species from North Peru

All the names in Paronychia described from South America are investigated. Five names (P. arbuscula, P. brasiliana subsp. brasiliana var. pubescens, P. coquimbensis, P. hieronymi, and P. mandoniana) are lecto- or neotypified on specimens preserved at GOET, K, LP, and P. The typification of nine names, first proposed by Chaudhri in 1968 as the "holotype" are corrected according to Art. 9.10 of ICN. Three second-step typifications (Art. 9.17 of ICN) are proposed for P. camphorosmoides, P. communis, and P. hartwegiana. The following nomenclatural changes are proposed: P. arequipensis comb. et stat. nov. (basionym: P. microphylla subsp. microphylla var. arequepensis), P. compacta nom. nov. pro P. andina (Philippi non Gray; Art. 53.1 of ICN), P. jujuyensis comb. et stat. nov. (basionym: P. hieronymi subsp. hieronymi var. jujuyensis), P. compacta subsp. boliviana comb. nov. (basionym: P. andina subsp. boliviana), and P. compacta subsp. purpurea comb. nov. (basionym: P. andina subsp. purpurea). A new species (P. glabra sp. nov.) is proposed based on our examination of live plants and herbarium specimens. P. johnstonii subsp. johnstonii var. scabrida is synonymized (syn. nov.) with P. johnstonii. Finally, P. argyrocoma subsp. argyrocoma is excluded from South America since it was based on misidentified specimens (deposited at MO) of P. andina subsp. andina. A total of 30 species (43 taxa including subspecies, varieties, subvarieties, and forms) are recognized, highlighting that for some (Paronychia chilensis, P. communis, P. setigera) we provisionally accept Chaudhri's infraspecific classification, since the high phenotypic variability of these taxa is quite complicated and further investigations need to solve their taxonomy.

Cytogenetics, Typification, Molecular Phylogeny and Biogeography of Bentinckia (Arecoideae, Arecaceae), an Unplaced Indian Endemic Palm from Areceae

Bentinckia is a genus of flowering plants which is an unplaced member of the tribe Areceae (Arecaceae). Two species are recognized in the genus, viz. B. condapanna Berry ex Roxb. from the Western Ghats, India, and B. nicobarica (Kurz) Becc. from the Nicobar Islands. This work constitutes taxonomic revision, cytogenetics, molecular phylogeny, and biogeography of the Indian endemic palm genus Bentinckia. The present study discusses the ecology, morphology, taxonomic history, distribution, conservation status, and uses of Bentinckia. A neotype was designated for the name B. condapanna. Cytogenetical studies revealed a new cytotype of B. condapanna representing 2n = 30 chromosomes. Although many phylogenetic reports of the tribe Areceae are available, the relationship within the tribe is still ambiguous. To resolve this, we carried out Bayesian Inference (BI) and Maximum Likelihood (ML) analysis using an appropriate combination of chloroplast and nuclear DNA regions. The same phylogeny was used to study the evolutionary history of Areceae. Phylogenetic analysis revealed that Bentinckia forms a clade with other unplaced members, Clinostigma and Cyrostachys, and together they show a sister relationship with the subtribe Arecinae. Biogeographic analysis shows Bentinckia might have originated in Eurasia and India.

A taxonomic revision of Cynanchumthesioides (Apocynaceae) with two new synonyms

Cynanchumthesioides, a species widely distributed in north-eastern Asia, is revised to include two new synonyms: Vincetoxicumsibiricumf.linearifolium, described from Shandong, China in 1877, but long neglected and Cynanchumgobicum, previously believed to be endemic to Mongolia. Typification for C.thesioides and all its synonyms is given, including lectotypification of V.sibiricumvar.australe and V.sibiricumf.linearifolium. An updated description, three figures showing the diverse habitats, habits and variation in morphological characters, and a general distribution map are also provided.

Section Ergaleium, Droseraceae)

The carnivorous Drosera microphylla complex from southwest Western Australia comprises a group of rare, narrowly endemic species that are potentially threatened by habitat destruction and illegal collection, thus highlighting a need for accurate taxonomic classification to facilitate conservation efforts. Following extensive fieldwork over two decades, detailed studies of both Australian and European herbaria and consideration of both crucial contributions by citizen scientists and social media observations, nine species of the D. microphylla complex are here described and illustrated, including four new species: D. atrata, D. hortiorum, D. koikyennuruff, and D. reflexa. The identities of the previously described infraspecific taxa D. calycina var. minor and D. microphylla var. macropetala are clarified. Both are here lectotypified, reinstated, and elevated to species rank. A replacement name, D. rubricalyx, is provided for the former taxon. Key morphological characters distinguishing the species of this complex include the presence or absence of axillary leaves, lamina shape, petal colour, filament shape, and style length. A detailed identification key, comparison figures, and a distribution map are provided. Six of the nine species are recommended for inclusion on the Priority Flora List under the Conservation Codes for Western Australian Flora and Fauna.

Nomenclature and typification of Cathayaargyrophylla (Pinaceae)

In 1958, Chun and Kuang described Cathaya Chun & Kuang as a new genus of Pinaceae. They included one fossil species, C.loehri (Engelh. & Kink.) Chun & Kuang and two extant species, C.argyrophylla Chun & Kuang and C.nanchuanensis Chun & Kuang. Under Art. 40.1 of the Shenzhen Code, they did not validly publish Cathaya because they did not designate a type species for the generic name. Four years later (Chun and Kuang 1962), they again published on Cathaya (in Chinese) where they cited the 1958 publication and included one species C.argyrophylla (with C.nanchuanensis in synonymy) under Cathaya. According to Art. 40.3, they validated both the generic name Cathaya and C.argyrophylla in 1962. Further examination of the type collection and botanical history of the discovery of C.argyrophylla revealed that the type collection Guang-Fu-Lin-Qu Exped. 00198 consists of 11 duplicates in the South China Institute of Botany (IBSC) and 9 duplicates in other herbaria (GAC, IBK, PE, SZ) and that the intended type specimen (IBSC0000004) consists of two gatherings: the bark, reproductive shoot and seed cones collected in 1955, whereas pollen-bearing cones were collected in 1956. We thus lectotypify the name C.argyrophylla with the specimen Guang-Fu-Lin-Qu Exped. 00198 (IBSC0000004 excl. pollen-bearing cones).

New and Interesting Fungi. 5

Nine new genera, 17 new species, nine new combinations, seven epitypes, three lectotypes, one neotype, and 14 interesting new host and / or geographical records are introduced in this study. New genera: Neobarrmaelia (based on Neobarrmaelia hyphaenes), Neobryochiton (based on Neobryochiton narthecii), Neocamarographium (based on Neocamarographium carpini), Nothocladosporium (based on Nothocladosporium syzygii), Nothopseudocercospora (based on Nothopseudocercospora dictamni), Paracamarographium (based on Paracamarographium koreanum), Pseudohormonema (based on Pseudohormonema sordidus), Quasiphoma (based on Quasiphoma hyphaenes), Rapidomyces (based on Rapidomyces narthecii). New species: Ascocorticium sorbicola (on leaves of Sorbus aucuparia, Belgium), Dactylaria retrophylli (on leaves of Retrophyllum rospigliosii, Colombia), Dactylellina miltoniae (on twigs of Miltonia clowesii, Colombia), Exophiala eucalyptigena (on dead leaves of Eucalyptus viminalis subsp. viminalis supporting Idolothrips spectrum, Australia), Idriellomyces syzygii (on leaves of Syzygium chordatum, South Africa), Microcera lichenicola (on Parmelia sulcata, Netherlands), Neobarrmaelia hyphaenes (on leaves of Hyphaene sp., South Africa), Neobryochiton narthecii (on dead leaves of Narthecium ossifragum, Netherlands), Niesslia pseudoexilis (on dead leaf of Quercus petraea, Serbia), Nothocladosporium syzygii (on leaves of Syzygium chordatum, South Africa), Nothotrimmatostroma corymbiae (on leaves of Corymbia henryi, South Africa), Phaeosphaeria hyphaenes (on leaves of Hyphaene sp., South Africa), Pseudohormonema sordidus (on a from human pacemaker, USA), Quasiphoma hyphaenes (on leaves of Hyphaene sp., South Africa), Rapidomyces narthecii (on dead leaves of Narthecium ossifragum, Netherlands), Reticulascus parahennebertii (on dead culm of Juncus inflexus, Netherlands), Scytalidium philadelphianum (from compressed air in a factory, USA). New combinations: Neobarrmaelia serenoae, Nothopseudocercospora dictamni, Dothiora viticola, Floricola sulcata, Neocamarographium carpini, Paracamarographium koreanum, Rhexocercosporidium bellocense, Russula lilacina. Epitypes: Elsinoe corni (on leaves of Cornus florida, USA), Leptopeltis litigiosa (on dead leaf fronds of Pteridium aquilinum, Netherlands), Nothopseudocercospora dictamni (on living leaves of Dictamnus albus, Russia), Ramularia arvensis (on leaves of Potentilla reptans, Netherlands), Rhexocercosporidium bellocense (on leaves of Verbascum sp., Germany), Rhopographus filicinus (on dead leaf fronds of Pteridium aquilinum, Netherlands), Septoria robiniae (on leaves of Robinia pseudoacacia, Belgium). Lectotypes: Leptopeltis litigiosa (on Pteridium aquilinum, France), Rhopographus filicinus (on dead leaf fronds of Pteridium aquilinum, Netherlands), Septoria robiniae (on leaves of Robinia pseudoacacia, Belgium). Neotype: Camarographium stephensii (on dead leaf fronds of Pteridium aquilinum, Netherlands). Citation: Crous PW, Begoude BAD, Boers J, Braun U, Declercq B, Dijksterhuis J, Elliott TF, Garay-Rodriguez GA, Jurjević Ž, Kruse J, Linde CC, Loyd A, Mound L, Osieck ER, Rivera-Vargas LI, Quimbita AM, Rodas CA, Roux J, Schumacher RK, Starink-Willemse M, Thangavel R, Trappe JM, van Iperen AL, Van Steenwinkel C, Wells A, Wingfield MJ, Yilmaz N, Groenewald JZ (2022) New and Interesting Fungi. 5. Fungal Systematics and Evolution 10: 19-90. doi: 10.3114/fuse.2022.10.02.

A Nomenclatural and Taxonomic Revision of the Senecio squalidus Group (Asteraceae)

Senecio squalidus (Asteraceae) currently includes nine subspecies distributed in North and Central Europe and in the Mediterranean basin. Within this taxonomic aggregate, many species have been described, but research on their nomenclatural types is incomplete. A complete nomenclatural survey of 19 names belonging to this taxonomically critical group was carried out. Fourteen lectotypes are here designated. The nomenclatural analysis, complemented by field investigations in the type localities of the taxa described in the Central Mediterranean, allowed us to accept 10 species. Accordingly, we proposed here a new name and a new missing combination at a specific level: S. aknoulensis and S. calabrus.

A comprehensive checklist of the deciduous photinia genus Pourthiaea (Maleae, Rosaceae), with emphasis on their validity and typification

Due to the complicated evolutionary history in Pourthiaea, ninety-seven taxa have been described since 1784, and ninety-one of them are validly published taxa, five are naked names, and one is an invalid name. After a comprehensive and critical evaluation, 213 names have been published, including new combinations, new status, and new names; this may be due to the controversial taxonomic position of Pourthiaea in the apple tribe, Maleae. We herewith provide a taxonomic checklist of Pourthiaea for further taxonomic and evolutionary studies. We also lectotypify two taxa: Photiniaamphidoxavar.stylosa and P.glabravar.fokienensis.

Fusarium and allied fusarioid taxa (FUSA). 1

Seven Fusarium species complexes are treated, namely F. aywerte species complex (FASC) (two species), F. buharicum species complex (FBSC) (five species), F. burgessii species complex (FBURSC) (three species), F. camptoceras species complex (FCAMSC) (three species), F. chlamydosporum species complex (FCSC) (eight species), F. citricola species complex (FCCSC) (five species) and the F. concolor species complex (FCOSC) (four species). New species include Fusicolla elongata from soil (Zimbabwe), and Neocosmospora geoasparagicola from soil associated with Asparagus officinalis (Netherlands). New combinations include Neocosmospora akasia, N. awan, N. drepaniformis, N. duplosperma, N. geoasparagicola, N. mekan, N. papillata, N. variasi and N. warna. Newly validated taxa include Longinectria gen. nov., L. lagenoides, L. verticilliforme, Fusicolla gigas and Fusicolla guangxiensis. Furthermore, Fusarium rosicola is reduced to synonymy under N. brevis. Finally, the genome assemblies of Fusarium secorum (CBS 175.32), Microcera coccophila (CBS 310.34), Rectifusarium robinianum (CBS 430.91), Rugonectria rugulosa (CBS 126565), and Thelonectria blattea (CBS 952.68) are also announced here. Citation: Crous PW, Sandoval-Denis M, Costa MM, Groenewald JZ, van Iperen AL, Starink-Willemse M, Hernández-Restrepo M, Kandemir H, Ulaszewski B, de Boer W, Abdel-Azeem AM, Abdollahzadeh J, Akulov A, Bakhshi M, Bezerra JDP, Bhunjun CS, Câmara MPS, Chaverri P, Vieira WAS, Decock CA, Gaya E, Gené J, Guarro J, Gramaje D, Grube M, Gupta VK, Guarnaccia V, Hill R, Hirooka Y, Hyde KD, Jayawardena RS, Jeewon R, Jurjević Ž, Korsten L, Lamprecht SC, Lombard L, Maharachchikumbura SSN, Polizzi G, Rajeshkumar KC, Salgado-Salazar C, Shang Q-J, Shivas RG, Summerbell RC, Sun GY, Swart WJ, Tan YP, Vizzini A, Xia JW, Zare R, González CD, Iturriaga T, Savary O, Coton M, Coton E, Jany J-L, Liu C, Zeng Z-Q, Zhuang W-Y, Yu Z-H, Thines M (2022). Fusarium and allied fusarioid taxa (FUSA). 1. Fungal Systematics and Evolution 9: 161-200. doi: 10.3114/fuse.2022.09.08.

Resurrection of Stipatremula and taxonomy of the high-alpine species from the Stipapurpurea complex (Poaceae, Pooideae)

Stipapurpurea is a high-alpine species that occurs in cryophilous steppes, semi-deserts and stony slopes, from the Tian Shan and Pamirian Plateau through Qinghai-Xizang Plateau to the Himalayas and is characterised by a great morphological variability. During the revision of specimens of the taxon, we observed that the pattern of this variability is linked to the geographical distribution of the specimens. Numerical analyses (PCA and UPGMA) revealed three groups of OTUs corresponding to three morphotypes within the S.purpurea complex. A set of macro- and micromorphological characters, supported by a map of general distributional ranges, are presented to distinguish each of the three taxa within the complex and we reassess the status of Lasiagrostistremula described by Ruprecht in 1869. As a result, Stipatremula, S.purpurea and S.arenosa were distinguished within the complex. The intermediate characters of S.arenosa may suggest its putative hybrid origin (S.tremula × S.purpurea), whereas the presence of extremely long florets may be an expression of the gigas effect. We propose two new combinations (S.tremula and S.arenosa), describe a new nothospecies (S.×ladakhensis) that originated from hybridisation between S.klimesii and S.purpurea s.l. and designate the lectotype for Ptilagrostissemenovii. An identification key and detailed morphological description of species from the S.purpurea complex are also presented.

The history and typification of Liliumbrownii A.Lemoinier (Liliaceae)

The Chinese Liliumbrownii has been much confused with the Japanese endemic species Liliumjaponicum. In this paper, it is shown that L.brownii was introduced to England at least four times between 1804 and 1819. The history of L.brownii is fully discussed and its taxonomy, nomenclature and relationships are examined. A neotype is designated for the name, its correct botanical authority is given and the correct place of its publication is provided. Lectotypes are also provided for the names Liliumaduncum Stapf, Liliumaustrale Stapf, Liliumodorum Planch., Liliumbrowniivar.colchesteri E.H.Wilson and Liliumbrowniivar.ferum Stapf.

Nomenclature and taxonomic identities of Prunuszappeyana and P.zappeyanavar.subsimplex (Rosaceae)

The original specimens of both Prunuszappeyana and P.zappeyanavar.subsimplex were found to belong to more than one taxon. In addition, P.zappeyanavar.subsimplex was found to be invalid because, when the name was published, two separate descriptions were given to two cited collections, but not to the taxon, making the name unaccompanied with a description or diagnosis of this taxon (Art. 38.1 (a)). Therefore, a lectotype of P.zappeyana was designated under Art. 9.11 of ICN, by which P.zappeyana was placed in the synonymy of P.veitchii.

Allium ducissae (A. subgen. Polyprason, Amaryllidaceae) a New Species from the Central Apennines (Italy)

In this paper, Allium ducissae (the LSID for the name Allium ducissae is: 77254606-1) is described as a new species based on morphological and molecular analyses, and its taxonomic relationships are discussed. It grows in crevices on calcareous rocks, rocky slopes and grassy ledges in the subalpine belt, within two regional protected areas in the Lazio and Abruzzo administrative regions (Central Apennines, Italy). Previously, these populations were attributed to A. strictum, a species described from Siberia, belonging to A. sect. Reticulatobulbosa. The new species is distinct from A. strictum in the morphology of vegetative and reproductive structures. Indeed, it is close to A. palentinum, an endemic species to Cantabrian Mountains (NW Spain). Both molecular and morphological data support the recognition of the Allium populations coming from the Central Apennines as a new species. Allium ducissae can be clearly distinguished from A. palentinum by longer and wider tepals, longer filaments, tooth of inner filament, flower pedicels, spathe appendage, and smaller seeds. Moreover, seed testa micro-sculptures revealed slight differences between A. ducissae and A. palentinum. Chromosome counts showed that A. ducissae is diploid with 2n = 16 chromosomes, as already known for A. palentinum. Molecular analyses support the affiliation of A. ducissae and A. palentinum to A. sect. Falcatifolia, contrary to what is known for the latter species, usually included in A. sect. Daghestanica. Finally, the IUCN assessment for the newly described species is proposed and briefly discussed.

(Plagiotheciaceae)

In the protologue of Plagiotheciumneglectum, Mönkemeyer (1927) does not indicate any herbarium specimen as a type. The author only gave a short description and attached a figure illustrating selected features of this taxon. The original materials from the Mönkemeyer collection were deposited in the HBG herbarium; however, it is not currently possible to determine their location. Furthermore, one specimen of P.neglectum, currently known from the original Mönkemeyer collections, was found in the Herbarium B (B 30 0105646). The features given in the diagnosis of this taxon are consistent with those of the lectotype of Stereodonnemoralis Mitt.; only the leaf apex from Figure 207c (Mönkemeyer 1927) is different and thus suggests mixed material. According to Art. 9.1 of the Shenzhen Code, Figure 207c represents a holotype of P.neglectum. However, due to differences in the leaf apex and according to Art. 9.3 of the Shenzhen Code, the part representing the apex should be excluded from the holotype, and the remainder of Figure 207c is consequently designated as a lectotype of the name P.neglectum. However, because the lectotype does not include a complete set of significant distinguishing features, an epitype (B 30 0105646) was designated.

Multilocus Phylogeography of the Tuber mesentericum Complex Unearths Three Highly Divergent Cryptic Species

Tuber mesentericum is an edible European black truffle, apparently easy to recognize, but showing a high degree of genetic variability. In this study, we performed an integrative taxonomic assessment of the T. mesentericum complex, combining a multilocus phylogeographic approach with morphological analyses, and including authentic specimens of Vittadini, and Berkeley and Broome. We performed maximum likelihood phylogenetic analyses, based on single and concatenated gene datasets (ITS rDNA, β-tubulin, elongation factor 1-α), and including all available sequences from previous studies. Phylogenetic analyses consistently recovered three reciprocally monophyletic and well-supported clades: clade I, with a wide range across Europe; clade II, specimens collected mainly in the Iberian, Italian, and Balkan peninsulas; and clade III, specimens collected almost exclusively in central Italy. Genetic distance between clades ranged from 10.4% to 13.1% at the ITS region. We also designed new primer pairs specific for each phylogenetic lineage. Morphology of spores, asci, and peridium were investigated on specimens representing the three lineages. Macro- and micromorphological analyses of ascomata revealed only a few, but not diagnostic, differences between the three phylogenetic lineages, thus, confirming that they are morphologically cryptic. By studying authentic specimens of Vittadini, and Berkeley and Broome, it was possible to identify the three clades as T. mesentericum, Tuber bituminatum, and Tuber suave sp. nov., and to designate an epitype for T. mesentericum s.s. and a lectotype for T. bituminatum. Future investigations on volatile organic compound (VOC) composition are needed to define the aroma repertoires in this species complex.

On the identity of Thymushumifususvar.aureopunctatus (Lamiaceae) and taxonomic notes on the Th.richardii complex

The name Thymushumifususvar.aureopunctatus, described from Bosnia and Herzegovina, is lectotypified, and its taxonomic value is discussed. Thymusrichardiisubsp.richardii is currently considered an endemic subspecies common to Mallorca (Balearic Islands) and Bosnia and Herzegovina from the Balkan Peninsula. Specimens identified as Th.richardii from both Balearic Islands and Bosnia and Herzegovina were studied to determine if they are indeed the same taxonomic entity. Detailed micromorphological observations and morphometric analysis, suggest that the Balkan plants (Th.humifususvar.aureopunctatus) and the Majorcan populations (Th.richardiisubsp.richardii) are clearly separate entities. For the former name, based on morphological, phytochemical, biogeographical and present results, we propose the subspecific rank, as Th.richardiisubsp.aureopunctatuscomb. & stat. nov. Full descriptions of all five subspecies currently accepted within Th.richardii are provided.

Phelypaeaboissierif.lutea (Orobanchaceae), a peculiar new form from Turkey and typification of the name of this species

The genus Phelypaea includes three holoparasite species with one of the most intense red flowers among all plants worldwide. So far, there are few references to other colour taxa of this genus. We describe a new yellow-coloured form, Phelypaeaboissierif.lutea, from Hakkari province in the Cilo Mountains of SE Turkey, found at an altitude of 2,470 m. In typical P.boissieri, here typified by us, the flowers are deeply red, and stems, calyx and scales are red to brown, or rarely pale-brown, whereas in the entire population of f.lutea the corolla, calyx, and scales are yellow to orange with black folds in the corolla, while only the stem is brownish.

Fungi of quarantine concern for China I: Dothideomycetes

The current list of Chinese quarantine pests includes 130 fungal species. However, recent changes in the taxonomy of fungi following the one fungus = one name initiative and the implementation of DNA phylogeny in taxonomic revisions, resulted in many changes of these species names, necessitating an update of the current list. In addition, many quarantine fungi lack modern morphological descriptions and authentic DNA sequences, posing significant challenges for the development of diagnostic protocols. The aim of the present study was to review the taxonomy and names of the 33 Chinese quarantine fungi in Dothideomycetes, and provide reliable DNA barcodes to facilitate rapid identification. Of these, 23 names were updated according to the single name nomenclature system, including one new combination, namely Cophinforma tumefaciens comb. nov. (syn. Sphaeropsis tumefaciens). On the basis of phylogenetic analyses and morphological comparisons, a new genus Xenosphaeropsis is introduced to accommodate the monotypic species Xenosphaeropsis pyriputrescens comb. nov. (syn. Sphaeropsis pyriputrescens), the causal agent of a post-harvest disease of pears. Furthermore, four lectotypes (Ascochyta petroselini, Mycosphaerella ligulicola, Physalospora laricina, Sphaeria lingam), three epitypes (Ascochyta petroselini, Phoma lycopersici, Sphaeria lingam), and two neotypes (Ascochyta pinodella, Deuterophoma tracheiphila) are designated to stabilise the use of these names. A further four reference strains are introduced for Cophinforma tumefaciens, Helminthosporium solani, Mycocentrospora acerina, and Septoria linicola. In addition, to assist future studies on these important pathogens, we sequenced and assembled whole genomes for 17 species, including Alternaria triticina, Boeremia foveata, B. lycopersici, Cladosporium cucumerinum, Didymella glomerata, Didymella pinodella, Diplodia mutila, Helminthosporium solani, Mycocentrospora acerina, Neofusicoccum laricinum, Parastagonospora pseudonodorum, Plenodomus libanotidis, Plenodomus lingam, Plenodomus tracheiphilus, Septoria petroselini, Stagonosporopsis chrysanthemi, and Xenosphaeropsis pyriputrescens. Citation: Zhao P, Crous PW, Hou LW, et al. 2021. Fungi of quarantine concern for China I: Dothideomycetes. Persoonia 47: 45-105. https://doi.org/10.3767/persoonia.2021.47.02.

The history and typification of Liliumhumboldtii J.H.Krelage (Liliaceae)

The history of the Californian Liliumhumboldtii J.H.Krelage, its initial discovery and confusion in literature over its collection, distribution and naming are discussed. Neotypes are designated for the names Liliumhumboldtii and Liliumbloomerianum Kellogg. Lectotypes are designated for the names Liliumcanadensevar.puberulum Torr. and L.bloomerianumvar.ocellatum Kellogg.

Nomenclatural revision of Cryptantha (Boraginaceae s. str.) names linked to South American taxa

During the preparation of the treatment of the genus Cryptantha Lehmann ex G. Don for South America, numerous names were identified as needing typification to stabilize their nomenclature. As a result, lectotypes are designated for 11 names and second-step lectotypes for 20 names. Furthermore, supporting information about the type material of the basionyms of four Cryptantha names already typified by Johnston (Eritrichiumtalquinum Phil., Eritrichiumdimorphum Phil., Eritrichiumcarrizalense Phil., and Eritrichiumsubamplexicaule Phil.) is provided.

Three novel Ambrosia Fusarium Clade species producing multiseptate "dolphin-shaped" conidia, and an augmented description of Fusarium kuroshium

The Ambrosia Fusarium Clade (AFC) is a monophyletic lineage within clade 3 of the Fusarium solani species complex (FSSC) that currently comprises 19 genealogically exclusive species. These fungi are known or predicted to be farmed by adult female Euwallacea ambrosia beetles as a nutritional mutualism (Coleoptera: Scolytinae; Xyleborini). To date, only eight of the 19 AFC species have been described formally with Latin binomials. We describe three AFC species, previously known as AF-8, AF-10, and AF-11, based on molecular phylogenetic analysis of multilocus DNA sequence data and comparative morphological/phenotypic studies. Fusarium duplospermum (AF-8) farmed by E. perbrevis on avocado in Florida, USA, is distinguished by forming two morphologically different types of multiseptate conidia and brownish orange colonies on potato dextrose agar (PDA). Fusarium drepaniforme (AF-10), isolated from an unknown woody host in Singapore and deposited as Herb IMI 351954 in the Royal Botanic Gardens, Kew, UK, under the name F. bugnicourtii, is diagnosed by frequent production of multiseptate sickle-shaped conidia. Fusarium papillatum (AF-11), isolated from mycangia of E. perbrevis infesting tea in Kandy, Sri Lanka, forms multiseptate clavate conidia that possess a papillate apical cell protruding toward the ventral side. Lastly, we prepared an augmented description of F. kuroshium (AF-12), previously isolated from the heads or galleries of E. kuroshio in a California sycamore tree, El Cajon, California, USA, and recently validated nomenclaturally as Fusarium. Conidia formed by F. kuroshium vary widely in size and shape, suggesting a close morphological relationship with F. floridanum, compared with all other AFC species. Maximum likelihood and maximum parsimony analyses of a multilocus data set resolve these three novel AFC species, and F. kuroshium, as phylogenetically distinct based on genealogical concordance. Given the promiscuous nature of several Euwallacea species, and the overlapping geographic range of several AFC species and Euwallacea ambrosia beetles, the potential for symbiont switching among sympatric species is discussed.

Fungi of quarantine concern for China I: Dothideomycetes

The current list of Chinese quarantine pests includes 130 fungal species. However, recent changes in the taxonomy of fungi following the one fungus = one name initiative and the implementation of DNA phylogeny in taxonomic revisions, resulted in many changes of these species names, necessitating an update of the current list. In addition, many quarantine fungi lack modern morphological descriptions and authentic DNA sequences, posing significant challenges for the development of diagnostic protocols. The aim of the present study was to review the taxonomy and names of the 33 Chinese quarantine fungi in Dothideomycetes, and provide reliable DNA barcodes to facilitate rapid identification. Of these, 23 names were updated according to the single name nomenclature system, including one new combination, namely Cophinforma tumefaciens comb. nov. (syn. Sphaeropsis tumefaciens). On the basis of phylogenetic analyses and morphological comparisons, a new genus Xenosphaeropsis is introduced to accommodate the monotypic species Xenosphaeropsis pyriputrescens comb. nov. (syn. Sphaeropsis pyriputrescens), the causal agent of a post-harvest disease of pears. Furthermore, four lectotypes (Ascochyta petroselini, Mycosphaerella ligulicola, Physalospora laricina, Sphaeria lingam), three epitypes (Ascochyta petroselini, Phoma lycopersici, Sphaeria lingam), and two neotypes (Ascochyta pinodella, Deuterophoma tracheiphila) are designated to stabilise the use of these names. A further four reference strains are introduced for Cophinforma tumefaciens, Helminthosporium solani, Mycocentrospora acerina, and Septoria linicola. In addition, to assist future studies on these important pathogens, we sequenced and assembled whole genomes for 17 species, including Alternaria triticina, Boeremia foveata, B. lycopersici, Cladosporium cucumerinum, Didymella glomerata, Didymella pinodella, Diplodia mutila, Helminthosporium solani, Mycocentrospora acerina, Neofusicoccum laricinum, Parastagonospora pseudonodorum, Plenodomus libanotidis, Plenodomus lingam, Plenodomus tracheiphilus, Septoria petroselini, Stagonosporopsis chrysanthemi, and Xenosphaeropsis pyriputrescens. Citation: Zhao P, Crous PW, Hou LW, et al. 2021. Fungi of quarantine concern for China I: Dothideomycetes. Persoonia 47: 45-105. https://doi.org/10.3767/persoonia.2021.47.02.

Taxonomy of Vincetoxicum s.str. (Asclepiadoideae, Apocynaceae) from southern Asia including three new species and resurrected names

This paper presents a taxonomic study of genus Vincetoxicum s.str. from southern Asia. Eleven regional endemic species are recognized on the basis of herbarium studies and fieldwork. Three new species are described: V. lenifolium sp. nov. (endemic to Pakistan), V. stewartianum sp. nov. (endemic to India), and V. subcanescens sp. nov. (endemic to Pakistan, Kashmir and Tibet). Three species names, V. cabulicum, V. glaucum and V. kenouriense, previously treated as synonyms of V. glaucum, V. canescens and V. hirundinaria, respectively, are resurrected. A neotype is designated for the Afghani endemic V. cabulicum. A lectotype is chosen from the syntypes of V. glaucum. We resolve the long-standing taxonomic problems in three species complexes: V. arnottianum, V. luridum, V. sakesarense, and V. stocksii; V. glaucum, V. canescens and V. cabulicum; and V. hirundinaria and V. kenouriense. Geo-taxonomic distinctions of southern Asian taxa are highlighted by excluding from henceforth the long misrecognized western Eurasian taxa V. canescens and V. hirundinaria. Furthermore, a detailed account of the genus including illustrations of whole plants, leaves and corona, distribution maps, a taxonomic key, morphological descriptions, synonymy, notes, and information on phenology, distribution and habitats is provided. Finally, provisional conservation assessments are provided, which indicate that V. cardiostephanum and V. sakesarense are critically endangered.

New and Interesting Fungi. 4

An order, family and genus are validated, seven new genera, 35 new species, two new combinations, two epitypes, two lectotypes, and 17 interesting new host and / or geographical records are introduced in this study. Validated order, family and genus: Superstratomycetales and Superstratomycetaceae (based on Superstratomyces ). New genera: Haudseptoria (based on Haudseptoria typhae); Hogelandia (based on Hogelandia lambearum); Neoscirrhia (based on Neoscirrhia osmundae); Nothoanungitopsis (based on Nothoanungitopsis urophyllae); Nothomicrosphaeropsis (based on Nothomicrosphaeropsis welwitschiae); Populomyces (based on Populomyces zwinianus); Pseudoacrospermum (based on Pseudoacrospermum goniomae). New species: Apiospora sasae on dead culms of Sasa veitchii (Netherlands); Apiospora stipae on dead culms of Stipa gigantea (Spain); Bagadiella eucalyptorum on leaves of Eucalyptus sp. (Australia); Calonectria singaporensis from submerged leaf litter (Singapore); Castanediella neomalaysiana on leaves of Eucalyptus sp. (Malaysia); Colletotrichum pleopeltidis on leaves of Pleopeltis sp. (South Africa); Coniochaeta deborreae from soil (Netherlands); Diaporthe durionigena on branches of Durio zibethinus (Vietnam); Floricola juncicola on dead culm of Juncus sp. (France); Haudseptoria typhae on leaf sheath of Typha sp. (Germany); Hogelandia lambearum from soil (Netherlands); Lomentospora valparaisensis from soil (Chile); Neofusicoccum mystacidii on dead stems of Mystacidium capense (South Africa); Neomycosphaerella guibourtiae on leaves of Guibourtia sp. (Angola); Niesslia neoexosporioides on dead leaves of Carex paniculata (Germany); Nothoanungitopsis urophyllae on seed capsules of Eucalyptus urophylla (South Africa); Nothomicrosphaeropsis welwitschiae on dead leaves of Welwitschia mirabilis (Namibia); Paracremonium bendijkiorum from soil (Netherlands); Paraphoma ledniceana on dead wood of Buxus sempervirens (Czech Republic); Paraphoma salicis on leaves of Salix cf. alba (Ukraine); Parasarocladium wereldwijsianum from soil (Netherlands); Peziza ligni on masonry and plastering (France); Phyllosticta phoenicis on leaves of Phoenix reclinata (South Africa); Plectosphaerella slobbergiarum from soil (Netherlands); Populomyces zwinianus from soil (Netherlands); Pseudoacrospermum goniomae on leaves of Gonioma kamassi (South Africa); Pseudopyricularia festucae on leaves of Festuca californica (USA); Sarocladium sasijaorum from soil (Netherlands); Sporothrix hypoxyli in sporocarp of Hypoxylon petriniae on Fraxinus wood (Netherlands); Superstratomyces albomucosus on Pycnanthus angolensis (Netherlands); Superstratomyces atroviridis on Pinus sylvestris (Netherlands); Superstratomyces flavomucosus on leaf of Hakea multilinearis (Australia); Superstratomyces tardicrescens from human eye specimen (USA); Taeniolella platani on twig of Platanus hispanica (Germany), and Tympanis pini on twigs of Pinus sylvestris (Spain). Citation: Crous PW, Hernández-Restrepo M, Schumacher RK, Cowan DA, Maggs-Kölling G, Marais E, Wingfield MJ, Yilmaz N, Adan OCG, Akulov A, Álvarez Duarte E, Berraf-Tebbal A, Bulgakov TS, Carnegie AJ, de Beer ZW, Decock C, Dijksterhuis J, Duong TA, Eichmeier A, Hien LT, Houbraken JAMP, Khanh TN, Liem NV, Lombard L, Lutzoni FM, Miadlikowska JM, Nel WJ, Pascoe IG, Roets F, Roux J, Samson RA, Shen M, Spetik M, Thangavel R, Thanh HM, Thao LD, van Nieuwenhuijzen EJ, Zhang JQ, Zhang Y, Zhao LL, Groenewald JZ (2021). New and Interesting Fungi. 4. Fungal Systematics and Evolution 7: 255-343. doi: 10.3114/fuse.2021.07.13.

Lectotypification of Plagiothecium mauiense, a Hawaiian synonym of Plagiothecium longisetum (Plagiotheciaceae)

In 2020, Plagiothecium mauiense Broth. was recognised as a synonym of P. longisetum Lindb.; however, due to the inability to compare all known original material, the conducted taxonomic analysis was not completed with lectotypification of the name. Syntypes of P. mauiense were found in four American herbaria: Harvard University Herbarium (FH00220142), Miami University Herbarium (MU 000000546), New York Botanical Garden Herbarium (NY01256708) and Yale University Herbarium (YU 233890). Considering the condition of the found material and Articles 9.3, 9.11 and 9.12 of the International Code of Nomenclature for algae, fungi and plants (Shenzhen Code) that is currently in force, a specimen NY01256708 was proposed to be the lectotype of P. mauiense.

Lilium leichtlinii subsp. maximowiczii (Regel) J.Compton (Liliaceae): a new combination for Maximowicz's orange lily

The newly-proposed Lilium leichtlinii subsp. maximowiczii (Maxim.) J.Compton recognises the wide distribution of Maximowicz's lily and provides long-term stability of the name. Lectotypes are designated for the names Lilium leichtlinii Hook.f., L. maximowiczii Regel, L. maximowiczii var. tigrinum Regel, L. pseudotigrinum Carrière and L. tigrinum var. lishmannii T.Moore.

Nomenclatural Synopsis of Cirsium Sect. Eriolepis (Asteraceae) in Italy

The names of the Italian taxa in Cirsium sect. Eriolepis are discussed. The accepted names are: Cirsium echinatum, C. eriophorum subsp. eriophorum, C. eriophorum subsp. spathulatum, C. ferox, C. italicum, C. lacaitae, C. lobelii, C. morisianum, C. scabrum, C. tenoreanum, C. vallis-demonii subsp. vallis-demonii, C. vallis-demonii subsp. calabrum comb. nov., and C. vulgare (= C. crinitum, C. sylvaticum). Four accepted names are typified by specimens preserved at FI (one lectotype), G (one lectotype and one neotype), P (one lectotype), and by illustrations (two lectotypes). Several other heterotypic synonyms of taxa described from Italy are discussed and six of them are typified. A new combination and status are proposed: C. vallis-demonii subsp. calabrum, based on C. eriophorum var. vallis-demonii f. calabrum.

Typification of Juniperus pingii W.C.Cheng (Cupressaceae)

W.C.Cheng validly published the name Juniperus pingii W.C.Cheng in 1944 by providing a validating Latin diagnosis in de Ferré (1944), but he failed to cite any specimen. He repeated the publication of the name in 1947 with the same Latin diagnosis; he thus published an isonym "J. pingii" under Art. 6 Note 2. Cheng (1947) lectotypified the name J. pingii when he designated W.C.Cheng 1015 as the "type" of the isonym. Farjon (2005) overlooked this early designation and his lectotypification of the name with the illustration from the 1944 protologue is not effective as the W.C.Cheng 1015 specimen is extant.

Nomenclatural and taxonomic updates in Rourea subgen. Rourea sect. Multifoliolatae (Connaraceae)

The pantropical genus Rourea Aubl. (Connaraceae) is composed of ca. 70 species, most of which occur in the Neotropics. Rourea is currently subdivided into three subgenera, with the American taxa included in Rourea subgen. Rourea. Forero (1976) recognised six sections for the species of the New World, with Rourea subgen. R. sect. Multifoliolatae being exclusive to Brazil, characterised by multifoliolate leaves, relatively small leaflets and the staminal tube (0.8-)1-1.5 mm long. Following Forero's (1976) treatment, additional botanical collections have become available in Brazilian herbaria, allowing re-evaluation of species concepts. This work recognises and revises 12 species in this section, mainly restricted to southeastern Brazil and southern Bahia. A nomenclatural and taxonomic study of these species is here presented, including an identification key, morphological descriptions, illustrations and geographic distribution maps. A new species is also described.

A new synonym from Hawaii and lectotypification of Plagiothecium longisetum (Plagiotheciaceae)

Plagiothecium mauiense was first described in 1927 by V.F. Brotherus, based on materials from Hawaii. It has, so far been, treated as a separate species. A detailed analysis of the original material housed in the New York Botanical Garden Herbarium (NY01256708) found the specimen to be characterised by a lack of metallic lustre; concave, asymmetrical, lanceolate to lanceolate-ovate leaves, shrunken in their dry condition; a straight, not denticulate, acute to apiculate apex; elongate-hexagonal cells in irregular transverse rows, 101-131 × 15-21 µm at mid-leaf; very lax areolation, with decurrencies composed of three rows of cells. These characteristics indicate that this species is identical to the original material of P. longisetum (e.g. H-SOL 1563 011; PC0132572). Hence, we propose that P. mauiense should be recognised as a new synonym of P. longisetum. In addition, a review of P. longisetum syntypes found one (H-SOL 1563 011) to have the same date of collection as the protologue, and to possess a quite abundant gametophyte turf with well-preserved sporophytes, indicating it to be fertile. Considering the above, we propose that specimen H-SOL 1563 011 be designated the lectotype of P. longisetum.

Taxonomic revision of the Andean genus Xenophyllum (Compositae, Senecioneae)

The Andean genus Xenophyllum (Compositae, Senecioneae) is distributed along the high-Andes from northeastern Colombia to northern Chile and northwestern Argentina, mainly thriving in the paramo and puna ecoregions. It comprises suffruticose plants forming dense mats, hummocks, or clumps of erect stems. They are characterized by displaying involucral bracts fused at the base, supplementary bracts absent, and mostly radiate capitula with white ray corollas, seldom yellow or pink (disciform in one species). Traditionally, Xenophyllum species were treated as members of the genus Werneria, a morphologically close genus that includes rosettiform or scapiform perennial herbs. As currently circumscribed, Xenophyllum mostly differs from Werneria in having elongate stems. Herein, the first modern and comprehensive revision of the genus recognizing twenty-two species and two subspecies is presented. Werneria decumbens is synonymized with X. weddellii, as well as X. fontii with X. humile and X. oscartovarii with X. dactylophyllum. Likewise, four varietal names and two sectional names are proposed as new synonyms. Seven names are lectotypified, the name X. sotarense is epitypified, W. decumbens neotypified, and the supraspecific name W. sect. Integrifoliae Rockh. is typified. The combination X. crassum subsp. orientalecomb. nov. is made. Descriptions and distribution maps are provided for all accepted species, in addition to an identification key. Ten species are illustrated, three of them for the first time.

Jaeger

In 1859, William Mitten described Stereodon nemoralis (≡ Plagiothecium nemorale) based on the gathering of Sir J.D. Hooker from India. However, the protologue did not indicate any specific specimen or illustration. For the past 50 years, the original material (NY 913349) deposited at the NY Herbarium has been considered as the holotype. However, this assumption has since been found to be incorrect, because in the Herbarium of The Natural History Museum exists other original material of this species (BM 1030713), collected by Hooker. In addition, the specimen from NY Herbarium is in poor condition and its most important diagnostic characters are not visible. In contrast, the material from BM Herbarium is in very good condition, and therefore it is herein designated as the lectotype. Also, the paper describes the resolution of this type, a process complicated by changes that had occurred in the provisions of subsequent botanical Codes.

A synopsis of the expanded Rhaphiolepis (Maleae, Rosaceae)

As part of the integrative systematic studies on the tribe Maleae, a synopsis of the expanded Rhaphiolepis is presented, recognizing 45 species. Three new forms were validated: R. bengalensis f. contracta B.B.Liu & J.Wen, R. bengalensis f. intermedia B.B.Liu & J.Wen, and R. bengalensis f. multinervata B.B.Liu & J.Wen, and four new combinations are made here: R. bengalensis f. angustifolia (Cardot) B.B.Liu & J.Wen, R. bengalensis f. gigantea (J.E.Vidal) B.B.Liu & J.Wen, R. laoshanica (W.B.Liao, Q.Fan & S.F.Chen) B.B.Liu & J.Wen, and R. latifolia (Hook.f.) B.B.Liu & J.Wen. Furthermore, one new name, Rhaphiolepis yui B.B.Liu & J.Wen is proposed here, and three taxa were reduced as new synonyms. We also provide lectotypification for 13 names: Crataegus bibas, Eriobotrya philippinensis, Mespilus spiralis, Opa integerrima, Photinia luzonensis, Rhaphiolepis brevipetiolata, R. ferruginea var. serrata, R. fragrans, R. gracilis, R. hainanensis, R. kerrii, R. indica subsp. umbellata var. liukiuensis, and R. parvibracteolata.

A review of Calypogeia (Marchantiophyta) in the eastern Sino-Himalaya and Meta-Himalaya based mostly on types

The eastern part of the southern macroslope of the Himalayan Range, Hengduan Mountains and the complex of smaller ranges from Hengduan southward to northern Indochina is one of the taxonomic hotspots of Calypogeia in Asia and the world. Two main circumstances hamper the understanding of taxonomic diversity of the genus in this area: the absence of recent and detailed descriptions and identification keys and the necessity of studying fresh material with surviving oil bodies in leaf cells. This study resulted in 1) eleven species confirmed for this vast land, 2) seven more taxa recorded but likely based on identification mistakes and 3) fourteen more taxa that are not yet recorded but may be expected in the area. All these taxa are discussed, and most of them are illustrated and described based on the types; an identification key is provided. The occurrence of North Holarctic taxa is hardly probable in the Sino-Himalaya, whereas new records of taxa known from the southern half of the Japanese Archipelago, Taiwan and southeastern mainland China are possible.

The Genera of Fungi - G5: Arthrinium, Ceratosphaeria, Dimerosporiopsis, Hormodochis, Lecanostictopsis, Lembosina, Neomelanconium, Phragmotrichum, Pseudomelanconium, Rutola, and Trullula

The present paper represents the fifth contribution in the Genera of Fungi series, linking type species of fungal genera to their morphology and DNA sequence data. This paper focuses on 11 genera of microfungi, for seven of which the type species are neo- or epitypified here: Arthrinium (Arthrinium caricicola; Apiosporaceae, Xylariales, Sordariomycetes), Ceratosphaeria (Ceratosphaeria lampadophora; Magnaporthaceae, Magnaporthales, Sordariomycetes), Dimerosporiopsis (Dimerosporiopsis engleriana; Venturiaceae, Venturiales, Dothideomycetes), Hormodochis (Hormodochis melanochlora; Stictidaceae, Ostropales, Ostropomycetidae, OSLEUM clade, Lecanoromycetes), Lecanostictopsis (Lecanostictopsis kamatii; Mycosphaerellaceae, Capnodiales, Dothideomycetes), Lembosina (Lembosina aulographoides; Lembosinaceae fam. nov., Lembosinales ord. nov., Dothideomycetes), Neomelanconium (Neomelanconium gelatosporum; Cenangiaceae, Helotiales, Leotiomycetes), Phragmotrichum (Phragmotrichum chailletii; Melanommataceae, Pleosporales, Pleosporomycetidae, Dothideomycetes), Pseudomelanconium gen. nov. (Pseudomelanconium spartii; incertae sedis, Pezizomycotina), Rutola (Rutola graminis; Torulaceae, Pleosporales, Pleosporomycetidae, Dothideomycetes), and Trullula (Trullula oreoselini; incertae sedis, Pezizomycotina).

New and Interesting Fungi. 3

Seven new genera, 26 new species, 10 new combinations, two epitypes, one new name, and 20 interesting new host and / or geographical records are introduced in this study. New genera are: Italiofungus (based on Italiofungus phillyreae) on leaves of Phillyrea latifolia (Italy); Neolamproconium (based on Neolamproconium silvestre) on branch of Tilia sp. (Ukraine); Neosorocybe (based on Neosorocybe pini) on trunk of Pinus sylvestris (Ukraine); Nothoseptoria (based on Nothoseptoria caraganae) on leaves of Caragana arborescens (Russia); Pruniphilomyces (based on Pruniphilomyces circumscissus) on Prunus cerasus (Russia); Vesiculozygosporium (based on Vesiculozygosporium echinosporum) on leaves of Muntingia calabura (Malaysia); Longiseptatispora (based on Longiseptatispora curvata) on leaves of Lonicera tatarica (Russia). New species are: Barrmaelia serenoae on leaf of Serenoa repens (USA); Chaetopsina gautengina on leaves of unidentified grass (South Africa); Chloridium pini on fallen trunk of Pinus sylvestris (Ukraine); Cadophora fallopiae on stems of Reynoutria sachalinensis (Poland); Coleophoma eucalyptigena on leaf litter of Eucalyptus sp. (Spain); Cylindrium corymbiae on leaves of Corymbia maculata (Australia); Diaporthe tarchonanthi on leaves of Tarchonanthus littoralis (South Africa); Elsinoe eucalyptorum on leaves of Eucalyptus propinqua (Australia); Exophiala quercina on dead wood of Quercus sp., (Germany); Fusarium californicum on cambium of budwood of Prunus dulcis (USA); Hypomyces gamsii on wood of Alnus glutinosa (Ukraine); Kalmusia araucariae on leaves of Araucaria bidwillii (USA); Lectera sambuci on leaves of Sambucus nigra (Russia); Melanomma populicola on fallen twig of Populus canadensis (Netherlands), Neocladosporium syringae on branches of Syringa vulgarishorus (Ukraine); Paraconiothyrium iridis on leaves of Iris pseudacorus (Ukraine); Pararoussoella quercina on branch of Quercus robur (Ukraine); Phialemonium pulveris from bore dust of deathwatch beetle (France); Polyscytalum pinicola on needles of Pinus tecunumanii (Malaysia); Acervuloseptoria fraxini on Fraxinus pennsylvanica (Russia); Roussoella arundinacea on culms of Arundo donax (Spain); Sphaerulina neoaceris on leaves of Acer negundo (Russia); Sphaerulina salicicola on leaves of Salix fragilis (Russia); Trichomerium syzygii on leaves of Syzygium cordatum (South Africa); Uzbekistanica vitis-viniferae on dead stem of Vitis vinifera (Ukraine); Vermiculariopsiella eucalyptigena on leaves of Eucalyptus sp. (Australia).

Hydnoporia, an older name for Pseudochaete and Hymenochaetopsis, and typification of the genus Hymenochaete (Hymenochaetales, Basidiomycota)

The genus name Hydnoporia is reinstated to encompass the Hymenochaete tabacina group currently addressed to Pseudochaete (illegitimate genus) or Hymenochaetopsis. Identity of the type species of Hydnoporia, Sistotrema fuscescens (= Hydnoporia olivacea in current sense), is clarified, and a lectotype is selected. In total, 12 species are combined in Hydnoporia: H. corrugata, H. gigasetosa, H. lamellata, H. laricicola, H. latesetosa, H. lenta, H. rhododendri, H. rimosa, H. subrigidula, H. tabacina, H. tabacinoides, and H. yasudai. Hydnoporia diffissa is described as new. Analyses of all available ITS (94) and newly produced tef1 sequences (20) indicate that there are at least 20-27 species in the genus. Identity of the type species of Hymenochaete, H. rubiginosa, is clarified; the name is retained for the species so named in Europe while other species are present in North America and East Asia. Additionally, three new combinations in Hymenochaete are proposed: H. campylopora (= Cyclomyces fuscus), H. microcycla (= Cyclomyces tabacinus), and H. saepiaria.

A four-locus phylogeny of rib-stiped cupulate species of Helvella (Helvellaceae, Pezizales) with discovery of three new species

Helvella species are ascomycetous macrofungi with saddle-shaped or cupulate apothecia. They are distributed worldwide and play an important ecological role as ectomycorrhizal symbionts. A recent multi-locus phylogenetic study of the genus suggested that the cupulate group of Helvella was in need of comprehensive revision. In this study, all the specimens of cupulate Helvella sensu lato with ribbed stipes deposited in HMAS were examined morphologically and molecularly. A four-locus phylogeny was reconstructed using partial sequences of the heat shock protein 90, nuclear rDNA internal transcribed spacer region 2, nuclear large subunit ribosomal DNA and translation elongation factor 1-α genes. Three clades were revealed in Helvella sensu stricto. Twenty species were included in the analysis, of which 13 are distributed in China. Three new species, H.acetabuloides, H.sichuanensis and H.tianshanensis, are described and illustrated in detail. A neotype was designated for H.taiyuanensis. Helvellacalycina is a new record for China, while Dissingialeucomelaena should be excluded from Chinese mycota. Hsp90 and ITS2 are recommended as useful supplementary barcodes for species identifications of the genus.