生活型

herb

形態特徵

• Perennial herb; stems erect or ascending, much-branched, pilose in upper part.
• Leaves opposite, sessile, oblong, 1–4.5 cm long, 0.5–1.5 cm wide, apex obtuse or mucronate, narrowed at base, upper surface glabrous, lower surface pubescent.
• Inflorescence sessile, capituliform or elongating into a spike, to 4 cm long; flowers white; bracteoles very narrow, inconspicuous; perianth segments 5, ovate, hyaline, 5–6 mm long, covered with long white woolly hairs outside at base; stamens 5, filaments linear, united below into a long tube.
• Utricles compressed, indehiscent.

分布

• 台灣 : In open fields in southern Taiwan.
• 世界 : Native of Brazil, also generally found in tropical countries.

引證標本

TAICHUNG: Taichung City, Kuo 1508; Tatushan, Hsu 10769. TAINAN: Tainan City, Hsu 13642. PINGTUNG: Pingtung City, Hsu 9275.

參考文獻

• LIU, TANG-SHUI and KAO, MUH-TSUEN, Flora of Taiwan, second edition 2: 403. 1996.  (Fl. Taiwan 2nd edit.)