New Taxa
The recently published new taxa and new records of Gesneriaceae from China before 31 December 2022 (8)



No. 08 JIAN XU,SA LI,SHENG-HU TANG  & QI-FEI REN


 

 

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


 

Phytotaxa 539 (1): 017–023

 




 

 

 

 

ABSTRACT

 

Southwestern China is the centre of diversity of Petrocosmea (Gesneriaceae). Here, a new species, named Petrocosmea dejiangensis Sheng H.Tang & Jian Xu, from north-eastern Guizhou, China, is described. The new species is most similar to P. martini (Lévl.) Lévl., 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.

Original article link: 

https://www.biotaxa.org/Phytotaxa/article/view/phytotaxa.539.1.2




The recently published new taxa and new records of Gesneriaceae from China before 31 December 2022 (8)


FIGURE 1. Petrocosmea dejiangensis Sheng H.Tang & Jian Xu, sp. nov. A habitat B flowering plant, rhizome, and fibrous roots (inset) C adaxial surface of leaf blade D abaxial surface of leaf blade E flower in front view F flower in side view G flower in top view H flower in back view I opened corolla showing stamen and pistil inside the corolla J opened corolla with stamens and pistil removed, showing stripes inside the corolla K stamens and anther (inset) L pistil and stigma (inset) M young fruit and calyx lobes. (Photographs by Sheng Hu Tang and Jian Xu).







The recently published new taxa and new records of Gesneriaceae from China before 31 December 2022 (8)


FIGURE 2. Petrocosmea martini (H.Lév.) H.Lév. A habitat B flowering plant C petioles, rhizome, and fibrous roots D adaxial surface of leaf blade E abaxial surface of leaf blade F cyme and bract (inset) G flower in front view H flower in side view I flower in top view J opened corolla, showing stamens and spots K stamens L pistil and stigma (inset). (Photographs by Sheng-Hu Tang).