生活型

herb

形態特徵

• Annual or biennial herbs; stems erect, 15–35 cm long, branched below, with a line of short hairs.
• Leaves opposite, membranaceous, deltoid-ovate to deltoid-cordate, 2–3 cm long, 1–2.5 cm wide, apex subobtuse, base shallowly cordate, margins obtusely serrate, loosely pubescent on both surfaces; petiole 5–10 mm long.
• Flowers in terminal loosely few-flowered racemes; racemes 3–6 cm long, pubescent; pedicel 1–2 mm long, suberect; bracts broadly linear, as long as or slightly longer than calyx; calyx 3–5 mm long, lobes oblanceolate, obtuse, longer than capsule; corolla 2–2.5 mm across.
• Capsule depressed-cordate, ca. 3 mm long, 3–5 mm across, apex retuse, loosely ciliate; seeds ca. 0.5 mm long.

分布

• 台灣 : in open fields and wastelands from low to middle elevations.
• 世界 : Africa, India, Java, Malaysia, Indochina, southern China, the Ryukyus and Japan.

引證標本

TAIPEI: Yenliao, Chiang 346; Tatunshan, Nakamura 4293. ILAN: Taipingshan, Suzuki 3720. HSINCHU: Chutung, Simada 3986B. NANTOU: Meifeng, Tsai 33. CHIAYI: Kuantsuling, Morimoto 485. PINGTUNG: Kuwarususya, Matuda s. n. 1920. TAITUNG: Litao-Tienlung Bridge, Huang et al. 3679*.

引用文獻

• LIU, Ho-Yih, Flora of Taiwan, second edition 4: 632. 1998.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)