生活型

shrub

形態特徵

• Subshrubs; stems erect or ascending.
• Leaves equally or slightly unequally paired, membranaceous to chartaceous, ovate to lanceolate, 5-20 cm long, 2-8.5 cm wide, apex acuminate to long acuminate, margins serrate to dentate-serrate or obscurely double-serrate, base obtuse to shallowly cordate, with three nerves to just below apex; petioles 1-9.5 cm long; stipules 2, free, caducous, narrowly oblong, 1.0-2.2 cm long, 3-7 mm wide, 2-veined, apex obtuse.
• Inflorescences usually panicles or interrupted spikes of glomerules of male flowers, and dense to loose cymes of glomerules of sessile of subsessile female flowers; peduncles of male Inflorescences to 5.5 cm long; mixed Inflorescences present. Male flowers glabrous; sepals 3 or 4, connate about halfway, valvate, cymbiform, corniculate; stamens 3 or 4. Female flowers with 3 or 4 sepals; sepals connate at base, unequal, cymbiform; ovary ellipsoid.
• Achenes asymmetrical, laterally compressed, ellipsoid.

物候

Flowering and fruiting July to October.

分布

• 台灣 : ravines and shady, moist forest floors at medium altitudes throughout the central mountains.
• 世界 : Japan?, S. mainland China, Indonesia, India and Vietnam.

引證標本

TAIPEI: Paraka Highway, Shih 3101; Peichatienshan, Shih 3132. ILAN: Fushan, Shih 2818; Taipingshan, Suzuki 5999. TAOYUAN: Rarashan, Shih 3230. HSINCHU: Gaogan, Shimada s. n. 1917. TAICHUNG: Hohuanchi, Shih 3000. NANTOU: Meifong, Shih 2941; Mt. Niitaka to Zenzan, Suzuki 13125. CHIAYI: Alishan, Suzuki 19362. KAOHSIUNG: Meishan, Shih 2816. TAITUNG: Leikunghuo, Miyake s. n. 1899. HUALIEN: Kuanyuan, Shih 3036; Sakatang-logging-trail, Shih 3081; Tzuen, Shih 3038.

引用文獻

• YANG, YUEN-PO, SHIH, BING-LING and LIU, HO-YIH, Flora of Taiwan, second edition 2: 234. 1996.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)