Morphology and molecules support the new monotypic genus Parainvolucrella (Rubiaceae) from Asia

By

Xu, Yi-Da
Yuan, Ming-Deng
Wang, Ruijiang

Type

Article

Date of Publication

2021

Original Publication

PhytoKeys

Volume

180

Pages

53--64

Subjects

new combination , Palynology , Parainvolucrella , Scleromitrion , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.180.67624

 

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.