Xu YD, Yuan MD, Wang RJ. Morphology and molecules support the new monotypic genus
Parainvolucrella (Rubiaceae) from Asia.
PhytoKeys 2021;
180:53-64. [PMID:
34393576 PMCID:
PMC8355009 DOI:
10.3897/phytokeys.180.67624]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
Parainvolucrella R.J. Wang, a new monotypic genus for P.scabra (Wall. ex Kurz) M.D.Yuan & R.J.Wang, new combination, is segregated from the Hedyotis-Oldenlandia complex, based on morphological and molecular evidence. Phylogenetically, the new genus is sister to Scleromitrion, from which it differs by a combination of morphological characters: herbaceous habit, terminal inflorescence with subtended leaves, heterostylous flowers, indehiscent fruits and pollen with double microreticulate tectum. A key to the genera of the Hedyotis-Oldenlandia complex in China is provided for further identification.
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