生活型

herb

形態特徵

• Annual or biennial herbs, glabrous, whitish or glauous; stems 4-angled, many-branched, prostrate at base, 10–30 cm long.
• Leaves opposite, sessile, ovate, 10–25 mm long, 5–15 mm wide, spreading, margins entire, apex acute to subobtuse, base rounded.
• Flowers axillary, pedicel 2–3 cm long; calyx segments linear-lanceolate, long-acuminate, 4–6 mm long; corolla bluish-purple to reddish, lobes obovate-orbicular, apex serrate, often ciliolate.
• Capsules globose, dehiscence circumscissile; seeds small, dark brown.

分布

• 台灣 : seashores and cultivated fields at low elevations.
• 世界 : Throughout temperate and southern Asia, NW Africa, Australia, Europe, North and South Americas.

引證標本

TAIPEI: Nankang, Peng 12496; Yehliu, Chuang 2096. TAOYUAN: Shalun, Peng 7723; Kuanyin, Leu 1717. HSINCHU: Lienhuashih, Peng 11541; Hsiangshan, Huang & Huang 13022. MIAOLI: Hsihu, Peng 13947. TAICHUNG: Tatushan, Hsu & Kouh 10761. CHANGHUA: Lukang, Ou & Kao 8895; Hsiensi, Huang 1461. TAINAN: Huwei, M. Ashiri 181; Chiali, Morimoto 48. PENGHU: Kudo & Mori 3095

參考文獻

• KAO, Muh-Tsuen and PENG, Ching -I, Flora of Taiwan, second edition 4: 57. 1989.  (Fl. Taiwan 2nd edit.)