生活型

herb

形態特徵

• Annual or biennial, prostrate or ascending herbs with numerous branches; sparsely strigose, hairs surrounded by cycles of calcified accessory cells.
• Leaves ovate to lanceolate, 10–60 mm long, 4–18 mm wide, decreasing in size upwards, midvein impressed above and elevated below, apex acute, margin slightly undulate, basal and lower cauline leaves petiolate, upper cauline leaves sessile.
• Flowers pale blue or white; pedicels 2–5 mm long. Calyx lobes linear-lanceolate, 2–2.5 mm long. Corolla 2–3 mm long, tube shorter than calyx; fornices trapeziform, emarginate.
• Nutlets ellipsoid, tuberculate, 1–1.5 mm long.

分布

• 台灣 : in fields at low elevations.
• 世界 : Japan, Korea, E. China, the Philippines, Vietnam, Indonesia, India, Pakistan, Afghanistan and CA. Asia.

引證標本

ILAN: Nanshan, Chuang & Kao 2433. TAIPEI: Huoshaochang to Knakou; Hsu 5249; Yinhotung, Hsu 4310. HSINCHU: Hsiangshan, Peng 3184. CHIAYI: Chuchi, Huang & Huang 14015. TAINAN: Sueichia, Kao 10534. KASOHSIUNG: Shangping, Huang 15965. PENGHU: Shiwenlli, Kuo 1

參考文獻

• HSIAO, Ju-Ying and LIU, Ho-Yih, Flora of Taiwan, second edition 4: 388. 1998.  (Fl. Taiwan 2nd edit.)