生活型

shrub

形態特徵

• A glabrous scandent shrub; stems terete, green.
• Leaves coriaceous, narrowly elliptic to lanceolate, 6–12 cm long, 1.5–3.5 cm wide, apex acuminate, base acute to round, margins entire, glabrous on both surfaces, green adaxially, pale green abaxially, venation pinnate, lateral veins 6–9 pairs; petiole 7–15 mm long, base connate into a stipular ring at node.
• Inflorescences axillary, 3–10-flowered cymes, bracts persistent, linear to triangular, 2–3 mm long, peduncle glabrous, 5–10 mm long. Flowers yellow, slightly pubescent in bud, pedicel glabrous, 5–10 mm long; calyx 5-merous, very widely ovate, ca. 1 mm long and wide, slightly imbricate, margin ciliate; corolla deeply 5-lobed, lobes lanceolate, 5–6 mm long, 1–1.5 mm wide, ascending to spreading at anthesis; stamens 5, loosely connivent, anthers ca. 3 mm long, filaments ca. 0.5 mm long, dorsifixed; ovary glabrous, 2-locular, style filiform, ca. 6 mm long at anthesis.
• Fruit 6–8 in diam., glabrous, blackish at maturity.

分布

• 台灣 : restricted mainly to evergreen broadleaf forests in Yangmingshan National Park and nearby mountainous areas in the northeast at ca. 600–1,700 m.
• 世界 : Japan (Western Honshu and the Ryukyu), southern mainland China.

引證標本

TAIPEI: Yangmingshan Natl. Park, Peng 12951; Peichatienshan, Li 3538. ILAN: Nanhutashan, Nanshan-Kiretei, Yamazaki et al. 692.

參考文獻

• LI, Hui-Lin and PENG, Ching-I, Flora of Taiwan, second edition 4: 148. 1998.  (Fl. Taiwan 2nd edit.)