No. 1 Fang Wen, Xin Hong, Ling-Yun Chen, Shou-Biao Zhou & Yi-Gang Wei:

A new species of Paraboea from a karst limestone hill in southwestern Guangdong, China

ABSTRACTA new species of Gesneriaceae, Paraboea tetrabracteata, growing in rocky crevices on a limestone hill in Guangdong, China, is described and illustrated. It is morphologically similar to P. rufescens and P. dictyoneura in leaf and flower shape, but can be distinguished by undulate to faintly sinuate blade margins, 3–6 lateral veins on each side, petioles 0.4–1.3 cm, peduncles 4–9 cm, 4 narrowly oblong-ovate bracts, calyx narrowly oblong to lanceolate or linear, a purplish corolla tube, 2 staminodes and straight fruits.

FIGURE 1.  A–D: Paraboea tetrabracteata (A) Habit in flowering period. (B) Cyme with opening flowers, buds and four bracts. (C) Dissection of a flower showing stamens and staminodes. (D) Calyx and pistil (drawn from the holotype).

FIGURE 2. Paraboea tetrabracteata   (A) Habitat. (B) Plants with flowers. (C) Abaxial leaf blade. (D) Cyme and bracts. (E) Cyme and opening flower. (F) Flowers for showing inner. (G) Peduncle and calyx lobes with densely brown pannose, and glabrous pistil. (H) Slightly curved capsule.

FIGURE 3. A–C: Paraboea dictyoneura. (A) Plant with cymes and flowers. (B) Cyme and opening flowers. (C) Abaxial leaf blade. D–F: Paraboea rufescens. (D) Plants. (E) Cymes. (F) Opening Flowers. (Figures A–C by Mr. An-Qiang Dong, E by Mr. Van-Truong Do)

Above-mentioned figure was cited from Wen et al., 2013.