No.20 Lei Cai and Zhi-Ling Dao

Oreocharis argentifolia (Gesneriaceae), a new species from thekarst region in southeastern Yunnan, China

Nordic Journal of Botany

ABSTRACT

A new species of Gesneriaceae, Oreocharis argentifolia Lei Cai & Z.L.Dao from Mengzi City, Yunnan Province, China, is described and illustrated. The new species is morphologically most similar to O. panzhouensis Lei Cai, Y.Guo & F.Wen in plant habit, number of stigma lobes and stamens, and the shape of the calyx, but differs in the shape of the leaf blade, indumentum, shape and color of corolla and the adnate position of the filaments. A detailed description, color photographs, distribution and habitat, as well as its morphological relationship with relevant similar species are also provided.

Original article link:https://onlinelibrary.wiley.com/doi/abs/10.1111/njb.02699; 

                                  https://doi.org/10.1111/njb.02699

Figure 1. Oreocharis argentifolia sp. nov. (A) habit, (B) side view of a flower, (C) opened corolla showing stamens and staminode, (D) frontview of a flower, (E) stamens, (F) pistil with disc and calyx (partly removed). Drawn by Xuan-Lin Zhu.

Figure 2. Oreocharis argentifolia sp. nov. (A) plants in the wild, (B) plants in cultivation in KBG, (C) adaxial leaf surface, (D) abaxial leafsurface, (E and F) side view of flowers (partly pulled back in F), (G) dry mature fruit, (H and I) front view of flowers, (J and K) pistil withdisc and calyx, opened corolla showing stamens and staminode (with red part J, without red part K). Photographed by Lei Cai.

Figure 3. (A) Oreocharis panzhouensis (photographed by Ying Guo), (B) O. flavida (photographed by Xi-Long Zheng), (C) O. delavayi(photographed by Shi-Wei Guo), (D) O. ninglangensis (photographed by Lei Cai); (1) plants in their natural habitat, (2) front view of flowers, (3) side view of flowers.

Figure 4. Oreocharis species in Mt Daweishan area, Yunnan, China (A) O. argentifolia, (B) O. hekouensis, (C) O. aurea, (D) O. rotundifolia;(1) plants in their natural habitat, (2) front view of flowers, (3) side view of flowers. Photographed by Lei Cai.