生活型

herb

形態特徵

• Herbs; stems 10–30 cm tall, branched near the base, unbranched upward.
• Leaves sessile, narrowly lanceolate to elliptic-ovate, 15–30 mm long, 3–10 mm wide, decreasing in size upward and becoming bracts, apex obtuse, base cuneate, margins entire.
• Flowers solitary in middle and upper leaf axils; pedicels 1–8 mm long at flowering, 10–25 mm in fruit. Calyx ca. 1.5 mm long. Corolla pale rose or purple, 4–7 mm long; tube 4.3–4.5 mm long.
• Capsule globose to ovoid, 2.5–3.5 mm long, ca. twice as long as calyx.

分布

• 台灣 : wet places or paddy fields in lowlands.
• 世界 : Tropical Asia to Australia; naturalized in North America.

引證標本

TAIPEI: Shihlin, Chuang 3114. TAOYUAN: Kappanshan, Simada 882C; Paikuaytsouh, Suzuki 21411.

引用文獻

• Liu, Ho-Yih, Flora of Taiwan, second edition 4: 589. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)