形態特徵

• Perennial herbs. Stems trailing and branching at base, often twining toward apex, less often creeping or pendulous, 15-60 cm; internodes 1-10 cm.
• Petioles 2-5 mm; leave blades ovate to ovate-lanceolate in basal nodes, linear to linear-lanceolate in upper nodes, herbaceous to subcoriaceous, 1-5 × 0.3-0.7 cm, base attenuate and somewhat decurrent, apex acute, margin cartilaginous and minutely scabrous, veins 3. Inflorescences terminal and axillary, 1-3-flowered; bracts 1-2 pairs, scale-like, rarely leaf-like.
• Calyx campanulate; tube 3-7 mm, wingless; lobes linear-subulate, 3-11 × 0.5-1.5 mm. Corolla pinkish white, longitudinally purple-red striped outside, nearly cylindrical, 2.4-3.7 cm; lobes deltoid, 3-4 × 3-4 mm, apex acute; plicae fan-shaped, margin crenulate. Filaments linear-subulate, 1.3-1.5 cm, inserted to corolla tube slightly above the top of ovary; anthers ellipsoid, ca. 1 mm. Disc ca. 1 mm. Ovary 7-9 mm long; gynophore 1-2 mm. Style linear, 1.1-1.3 cm.
• Berries often included in withered corolla, reddish purple, subglobose to ovoid, 10-16 × 8-12 mm; gynophore slightly shorter to slightly longer then calyx tube. Seeds dark-brownish, ellipsoid to ovoid, triquetrous, 1-1.3 mm, wingless.

物候

Flowering from August to December. Fruiting from November to April.

分布

• 台灣 : Populations mostly found in limestone-rich mountainous regions of eastern Taiwan, 1300-2300 m in alt. Plants scattered around shrubs, forest gaps, and roadsides.

參考文獻

• Tian-Chuan Hsu and Shih-Wen Chung, Taiwania 57(2): 183-187. 2012.