Petrocosmea dejiangensis (Gesneriaceae), a new species from Guizhou, China

Abstract

Southwestern China is the centre of diversity of Petrocosmea (Gesneriaceae). Here, a new species, named Petrocosmea dejiangensis, from north-eastern Guizhou, China, is described. The new species is most similar to P. martini, but it is distinguished from the latter by two dark blue-purple stripes inside the corolla tube along its entire length, the anthers shorter than the filaments, and the stigma apex rounded. Three populations comprising approximately 120 mature individuals were found at and near the type locality. This new taxon was assessed as “Data Deficient” (DD), according to IUCN standards.

Petrocosmea wangii sp. nov. and Petrocosmea yei sp. nov. (Gesneriaceae) from Yunnan, China

“…Most species of this genus grow on damp limestone walls, and can be found in the limestone areas on and around the Yunnan‐Guizhou Plateau. A number of new taxa have been described in recent years, and there were nearly 70 species in this genus by December 2022, most of which were discovered from hidden niches and caves in previously underexplored island‐like limestone areas (Qiu et al 2015, Yang et al 2019, Cai et al 2022, Han et al 2022, Tang et al 2022, Xu et al 2022). This is the result of nearly 20‐year exploration of plant diversity in limestone areas in China (Duan et al 2021).…”