No.7   TRUONG VAN DO, YI-GANG WEI & FANG WEN

Oreocharis caobangensis (Gesneriaceae), a new species from Cao Bang Province, northern Vietnam

Phytotaxa 302(1): 65–70.

ABSTRACT

A new species of Oreocharis (Gesneriaceae) from Cao Bang province, northern Vietnam is described and illustrated. The new species, Oreocharis caobangensis, is most similar to O. lungshengensis, but it can be easily distinguished from the latter by its petioles densely brownish villous, lateral veins 6–8 pair on each leaf blade, bracts smaller (1.5–2 mm long), corolla outside pubescent and pistil glabrous, 18–20 mm long.

FIGURE 1. Oreocharis caobangensis. A. Habitat, B. Frontal view of corolla, C. Opened corolla showing stamens, D. Stamens (anthers and filaments) (D1 & D2: the filaments at the insertions of corolla inner), E. Pistil, F. Stigma (Drawn by Ms. Xuan Wen).

FIGURE 2. Oreocharis caobangensis. A Habit, B. Plant and cymes, C. Frontal and lateral view of corollas, D. Lateral view of cymes and corollas, E. Top view of corolla, F. Opened corolla showing stamens, G. Young fruits and fruit peduncle (Photographs by Fang Wen (A, C, D, E) and Do Van Truong (B)).

FIGURE 3. Oreocharis lungshengensis. A & B. Habitat, C. Cyme, D. The frontal view of corolla, E. The lateral view of corolla (all photographs by Fang Wen).