ARPHA Preprints, doi: 10.3897/arphapreprints.e67735
Morphology and molecules support the new monotypic genus Parainvolucrella (Rubiaceae) from Asia
expand article infoYi-Da Xu‡, Ming-Deng Yuan‡, Ruijiang Wang§
‡ South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China§ South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou, China

Corresponding author: Ruijiang Wang ( wangrj@scbg.ac.cn )

© Yi-Da Xu, Ming-Deng Yuan, Ruijiang Wang.
This is an open access preprint distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation: Xu Y-D, Yuan M-D, Wang R (2021) Morphology and molecules support the new monotypic genus Parainvolucrella (Rubiaceae) from Asia. ARPHA Preprints. https://doi.org/10.3897/arphapreprints.e67735
Open Access
Abstract

Parainvolucrella R.J. Wang, a new monotypic genus is segregated from Hedyotis-Oldenlandia complex based on the morphological and molecular evidences, along with the new combination of P. scabra (Wall. ex Kurz) M.D.Yuan & R.J.Wang. The new genus is phylogenetically sister to Scleromitrion and has ever been mistaken as a member of Scleromitrion, but its perennial woody herbaceous habit, terminal inflorescence, heterostylous flowers, indehiscent capsules, and microreticulate with smooth muri pollen surface ornamentation make it different from the latter. A key for all the genera of this complex in China is provided as well.

Keywords
new combination, palynology, Parainvolucrella, Rubiaceae, taxonomy