No.2   LI-HUA YANG, JING-ZHONG HUANG, FANG-DONG DENG & MING KANG

Oreocharis uniflora, a new species of Gesneriaceae from Guangdong, China

Phytotaxa 295(3): 292–296.

ABSTRACT

Oreocharis uniflora, a new species of Gesneriaceae from Guangdong, China, is described and illustrated. The new species is morphologically similar to O. striata and O. lungshengensis, but differs mainly by its white villous leaf blades and petioles, 1-flowered cymes, shorter peduncles (1.8–3.5 cm long), 3–5-serrate calyx lobes, pale purple to reddish purple corollas, inside with longitudinally purple striations, campanulate-tubular corolla tubes, 4 free stamens, and 1 disc-shaped stigma. Based on the current information, O. uniflora should be considered as ‘Critically Endangered’ (CR), following the IUCN categories and criteria (Cited from Yang et al., 2017).

FIGURE 1.  Oreocharis uniflora sp. nov. (A) habit, (B) opened corolla showing stamens, (C) pistil, (D) stigma, (E) anther, (F) calyx lobes, (G) fruit, (H) adaxial leaf surface, (I) abaxial leaf surface. Drawn by Yun-Xiao Liu from the holotype(Cited from Yang et al., 2017).

FIGURE 2.  Oreocharis uniflora sp. nov. (A) habit, (B) adaxial leaf surface, (C) abaxial leaf surface, (D) flower in front view, (E) flower in side view, (F, G) opened corolla showing stamens, (H) pistil and calyx, (I) mature fruits before dehiscence, (J) dehisced fruits. Scale bars: B, C = 3 cm, D–J = 1 cm. Photos by Li-Hua Yang (Cited from Yang et al., 2017).

FIGURE 3. Geographic distribution of Oreocharis uniflora (triangle), O. striata (circle) and O. lungshengensis (square) (Cited from Yang et al., 2017).