生活型

herb

形態特徵

• An annual herb up to 1 m high; stems erect, branched, hirsute or nearly glabrous.
• Leaves membranaceous, lanceolate to ovate-lanceolate, 2–6 cm long, 1–3 cm broad, the apex acuminate, the base acute or rounded, the margins obtusely serrate, sparsely pilose, 3-nerved at base; petioles 2–5 cm long. Spikes axillary, androgynous, short-pedunculate, 1–4 cm long.
• Male flowers at the top of the spikes, small, naked. Female flowers at the base of the spikes; bracts reniform, 1–1.5 cm long, acuminate; sepals ovate, ciliate; ovary pilose; styles 3 mm long.
• Capsules 3 mm across, pilose; seeds 1.5–2 mm long, smooth.

分布

• 台灣 : Throughout the whole island at low altitudes.
• 世界 : Ussuri, Korea, Japan, the Ryukyus, China and the Philippines.

引證標本

TAIPEI: Wulai, Kuoh 2895. TAICHUNG: Neipu, Hsu 4704. NANTOU: Puli, Hsu 4640. KAOHSIUNG: Chiuchutan, Chuang et al. 1540. PINGTUNG: Hengchun, Wang 12713. TAITUNG: Tawu, Hsu 4087.

引用文獻

• HSIEH, CHANG-FU, CHAW, SHU-MIAW and WANG, JENN-CHE, Flora of Taiwan, second edition 3: 416-419. .  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)