生活型

shrub-herb

形態特徵

• Perennial herbs or undershrubs; stems erect or ascending.
• Leaves equally to slightly unequally paired, membranaceous to herbaceous, narrowly elliptic-lanceolate, lanceolate or oblong-oblanceolate, 5.5-22 cm long, 1.1-7.5 cm wide, apex acute, acuminate to caudate, with a serrulate acumine, margins serrulate to nearly entire, base cuneate, triplinerved; petioles 0.2-9.5 cm long; stipules entirely connate, broadly triangular, veinless, obtuse at apex, entire at margins.
• Inflorescences usually 2 per axil, cymose-panicles, pedunculate; male Inflorescences 2.5-9.0 cm long, peduncles 1-3.2 cm long; female Inflorescences 0.6-3.5 cm long, peduncles 2-16 mm long; Inflorescences of mixed sexes present. Male flowers glabrous, laterally compressed, widely obovoid, rounded at apex, truncate at base; sepals 3 or 4, connate about halfway, valvate, slightly dimorphic, cymbiform, somewhat short corniculate; pedicels 0-1.2 mm long. Female flowers ovoid; sepals 3 or 4, connate at base, somewhat unequal; ovary ovoid; staminodes 3 or 4.
• Achenes glabrous, laterally compressed, asymmetrical, ellipsoid, slightly warty.

物候

Flowering and fruiting nearly throughout the year, flowers and fruits abundant in summer and fall.

分布

• 台灣 : ravines, moist shady forest floors, sunny roadsides and rocks in moist places at low to medium altitudes throughout the island except on the Hengchun peninsula.

引證標本

ILAN: Chaihsiang Bridge, Shih 2872. HSINCHU: Kawakami & Shimada 5662. TAICHUNG: Hohuanchi, Shih 2999; Lishan, Shih 2887. NANTOU: Tili, Shih 2966; Tongpu, Shih 2982. CHIAYI: Alishan, Soma s. n. 1914; Funkiko, Shih 2965. TAINAN: Kuantzuling, Shih 2735. KAOHSIUNG: Likuan, Shih 3337; Weichinchi Bridge, Shih 2619. PINGTUNG: Ali, Shih 2720. TAITUNG: Chihpentsushan, Shih 2671; Chihpen Logging Trail, Shih 2597. HUALIEN: Sakartang Logging Trail, Shih 3057; Tzuen, Shih 3250.

引用文獻

• YANG, YUEN-PO, SHIH, BING-LING and LIU, HO-YIH, Flora of Taiwan, second edition 2: 250. 1996.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)