Three new species of Isodon (Nepetoideae, Lamiaceae) from China

By

Chen, Yaping
Peng, Hua
Paton, Alan
Xiang, Chunlei

Type

Article

Date of Publication

2024

Original Publication

PhytoKeys

Volume

246

Pages

283--293

Subjects

dry valley , Hengduan Mountains , Isodoninae , Ocimeae , Southwest China

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.246.130432

 

Abstract

Three new species of Isodon (Lamiaceae) from China are described and illustrated, based on both morphological evidence and our recent phylogenomic studies of the genus. Isodon attenuatus, a herbaceous new species known only from the Fanjing Mountain, is shown to be sister to I. villosus, but they can be easily distinguished by leaf and inflorescence indumentum, calyx teeth shape and corolla tube morphology. Isodon gongshanensis, a herbaceous new species collected from the Hengduan Mountains in southwest China, represents a distinct lineage within the genus. Isodon sukungii, a shrubby new species also endemic to the Hengduan Mountains, was previously misidentified as I. tenuifolius, but they are phylogenetically distantly related and differ in lamina size and margin, inflorescence type and corolla length and shape.