Oreocharisodontopetala, a new species of Gesneriaceae from Guizhou, China.

Qiong Fu,Ying-Qiang Wang,Ying Guo,Ying Xia,Rong Huang

doi:10.3897/phytokeys.124.34609

Abstract

A new species, Oreocharisodontopetala Q.Fu & Y.Q.Wang from Guizhou Province in southwest China, is described and illustrated, based on morphological comparison with existing species. It is morphologically most similar to O.elegantissima, but can be easily distinguished by its adaxially bullate leaf blade, abaxially conspicuous reticulate veinlets, brown-purple peduncles, triangular adaxial corolla lobes and abaxial corolla lobe margins bearing 4–10 long teeth, glabrous style and shorter stamens with confluent thecae at the apex, as well as leaf epidermal characters.

Highlights

The genus Briggsia was established by Craib (1919a) and had at one point > 20 species (Wang et al 1990, 1998; Li and Wang 2004; Wu et al 2012; Wen et al 2015)
The new species grows on limestone rocks of a hill forest in Wumeng grassland, Wumeng Town, Panzhou City, Guizhou Province, southwest China (26°4.33'N, 104°37.34'E, alt. ca. 2100 m) and the studied population of O. elegantissima grows on limestone rocks in a subtropical moist forest in Heibai Village, Yuni Town, Panzhou City, Guizhou Province, southwest China (25°59.50'N, 104°51.27'E, alt. ca. 1760 m)
Oreocharis odontopetala differs from O. elegantissima by its adaxially bullate leaf blade, with abaxially reticulate veinlets conspicuous; peduncles brown-purple; adaxial corolla lobes triangular and abaxial corolla lobe margins with 4–10 long teeth; style glabrous and stamens shorter with confluent thecae at apex

Summary

Introduction

The genus Briggsia was established by Craib (1919a) and had at one point > 20 species (Wang et al 1990, 1998; Li and Wang 2004; Wu et al 2012; Wen et al 2015). In the flowering season 2018, comparative studies on the morphology and floral ecology between the new species and Oreocharis elegantissima were carried out from two different localities.

Results

Conclusion