生活型

herb

形態特徵

• Annual erect to prostrate herbs to 40 cm long, often branched from base; branches sharply 4-angled, glabrous.
• Leaves opposite, slightly fleshy, sessile or petiolate, elliptic or oblong, 15–40 mm long, 6–18 mm wide, apex acute to acuminate, base cuneate, glabrous, midrib prominent, lateral veins and veinlets obscure; petiole 0–15 mm long; stipular sheath truncate, deltate.
• Flowers few in clusters, or solitary; lower bracts foliaceous, reduced upward to scales or vestigial; calyx lobes deltate-acuminate; corolla white or purplish, 2–3 mm long, hairy in throat; stamens inserted near middle of tube, included; style subequal with tube.
• Fruit subglobose, 2.5–4 mm in diam., slightly compressed, ribbed.

分布

• 台灣 : sunny to slightly shaded areas at low elevations.
• 世界 : Tropical Asia.

引證標本

KAOHSIUNG: Hsiaoliukiu, Huang 9034. PINGTUNG: Kenting, Hsu & Hsu 4209; Nanjenshan, Huang 4461. TAITUNG: Lanyu, Hsu 5011; Lutao, Huang & Kao 6936.