生活型

herb

形態特徵

• An annual herb up to 80 cm high; branches tomentose.
• Leaves rhomboid-ovate or ovate, 2–5 cm long, 1.5–3.5 cm wide, the apex acute, abruptly, the base cuneate, the margins serrate, glabrescent; petioles up to 4 cm long, tomentose.
• Spikes axillary, 2–4 cm long; fruit bearing bracts elliptic-ovate, 3–5 mm long, 6–9 mm broad, the margins dentate, ciliate.
• Capsule 3-lobed, 1.5–2 mm long, short-pilose.

分布

• 台灣 : On the open roadside and waste field in the southern part at lower altitude.
• 世界 : Tropical Africa, Madagascar, India, Sri Lanka, Thailand, Singapore, Java, the Philippines, Taiwan, the Ryukyus and Pacific Islands.

引證標本

TAINAN: Yenshui, Hon 7. KAOHSIUNG: Tsoying, Yang 2407. PINGTUNG: Hengchun, Hsieh et al. 949. TAITUNG: Taitung City, Kao 9596.

參考文獻

• HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 3: 421. .  (Fl. Taiwan 2nd edit.)