生活型

herb

形態特徵

• Annual or biennial herbs, slightly fleshy, glabrous.
• stems erect, terete, 15–40 cm long, 8–15 mm wide, apex subacute, base rounded or shallowly cordate, sessile and semi clasping, margins entire to undulate- serrulate.
• Racemes laxly many flowered, 5–15 cm long, on short axillary peduncle; pedicel spreading, 4–6 mm long; bracts broadly linear, shorter than or nearly as long as pedicel; calyx segments 4, narrowly oblong, 3–4 mm long, obtuse, slightly longer than to equallings the capsule; corolla rose or pale blue-purple, about 5 mm across.
• Fruit an orbicular about 3 mm across; style persistent ca. 1.5 mm long; seeds ca. 0.3 mm long.

物候

Flowering time in April-June.

分布

• 台灣 : wampy waste land, river beds and paddy fields from 0 to 1,600 m.
• 世界 : North America, Europe and eastern Asia.

引證標本

TAIPEI: Fulung, Huang 8306; Shihmen, Kuo 10945. IIAN: Nanao, Huang & Huang 13370. HSINCHU: Hsinchu, Simada 3979B. MIAOLI: Yuanli, Hsu 5263. TAICHUNG: Tatushan, Hsu & Kuoh 10770. CHANGHUA: Changhua, Peng 990. CHIAYI: Liuchiao, Morimoto 484.

引用文獻

• LIU, Ho-Yih, Flora of Taiwan, second edition 4: 642. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)
• Li, Flora of Taiwan 4: 612. 1978.  (Fl. Taiwan, 台灣植物誌)