No.16 Sheng-Hu Tang , Jia-Wen Yang , Cong-Rui Li& Qing Zhou

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

PhytoKeys 181: 1–8 (2021)

ABSTRACT

Plants belonging to the genus Petrocosmea are rare and small herbs difficult to find in the wild. In the present study, a new species, Petrocosmea duyunensis, from Guizhou, China, is described. The species is most similar to P. leiandra and differs from it by a distinctly recurved abaxial corolla lip, free anthers and included pistil. Detailed morphological comparisons are given. One population with about 100 mature individuals was found at the type locality. This new taxon was assessed as “Data Deficient” (DD) according to the IUCN standards.

Original article link:https://doi.org/10.3897/phytokeys.181.68635

Figure 1. Petrocosmea duyunensis Sheng H.Tang sp. nov. A habitat B flowering plant, rhizome and fibrous roots (inset) C adaxial surface of leaf blade and indumentum (inset) D abaxial surface of leaf bladeE, F flowers in front view G flower in side view H flower in back view I, J dissected corolla, stamens andpistil with corolla removed (inset) K stamens and anther (inset) L pistil with abaxial calyx lobes, andadaxial lobes removed M capsules of previous year. (Photographed by Sheng-Hu Tang).

Figure 2. Petrocosmea leiandra (W.T.Wang) Z. J. Qiu A habitat B flowering plant C abaxial surfaceof leaf blade D, E flower in front view F flower in side view G flower in top view H flower in backview I dissected corolla J stamens K pistil with calyx removed L capsules of previous year. (Photographed by Sheng-Hu Tang).