The recently published new taxa and new records of Gesneriaceae from China before 31 December 2023 (14)

Petrocosmea getuheensis (Gesneriaceae), a new species from a karst cave in Guizhou Province, China

No. 14 Xingchen Li, Yulu Zhou, Qiu Wang & Xinxiang Bai

Summary. Petrocosmea getuheensis X.X.Bai, Y.L.Zhou & Xing Chen Li,a new species of Gesneriaceae from a karst cave in Guizhou Province, China, is described and illustrated here, with colour photographs and a preliminary assessment for the IUCN Red List. It morphologically resembles P. minor Hemsl., but this new species can be easily distinguished from that taxon and all other species of Petrocosmea Oliv. by the comprehensive characteristics of its leaf blade thinly papery, lateral veins inconspicuous, abaxial lip lobes narrowly-triangular, apex acute, flaments transparent glandular hairs around the protuberant side, anthers round at apex, pistil apex barely protruding or obvious. One population with about 10,000 mature individuals was found at the type locality. This new taxon was assessed as “Data Defcient” (DD) according to the IUCN standards.

Original article link: DOI 10.1007/s12225-023-10132-w

Fig. 1. Petrocosmea getuheensis. A – B habit; C – D fowering plants; E adaxial surface of leaf blade; F abaxial surface of leaf blade; G flower in front view; H fower in side view; J opened corolla showing stamen inside the corolla; K calyx; L ovary and pistil; M abaxial lip; N stamens; P adaxial lip; Q capsule. PHOTOS: XINXIANG BAI.

Fig. 2. Petrocosmea getuheensis. A flowering plant; B flower in front view; C flower in side view; D adaxial surface of leaf blade; E abaxial surface of leaf blade; F stamen; G calyx; H opened corolla showing stamen inside the corolla; J abaxial lip; K adaxial lip; L capsule; M ovary and pistil. DRAWN BY BAIQIU HE.