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Dinghushan | Family List | Euphorbiaceae | Euphorbia

Euphorbia hypericifolia L.

通奶草

Description from Flora of China

Herbs, annual, 15-30 cm tall. Root fibrous, 2-3.5 mm thick. Stems branched mainly from upper parts, erect, 1-3 mm thick, glabrous or sparsely pilose. Leaves opposite; stipules triangular, 1.3-1.5 mm, free or connate; petiole 1-2 mm; leaf blade narrowly oblong or obovate, 1-2.5 cm × 4-8 mm, adaxially dark green, light green abaxially, sometimes purple-red, sparsely pilose on both surfaces, or glabrescent abaxially, base rounded, margin entire or finely serrulate toward apex, apex obtuse or rounded; involucral leaves 2, similar to normal leaves. Cyathia many in axillary or terminal cymes, peduncle 3-5 mm; involucre turbinate, ca. 1 × 1 mm, marginal lobes 5, ovate-triangular; glands 4, appendages white or light pink. Male flowers numerous, slightly exserted from involucre. Female flower: pedicel longer than involucre; ovary 3-angular, glabrous; styles free; stigma slightly 2-lobed. Capsule 3-angular, 1-1.5 × ca. 2 mm, smooth, glabrous. Seeds ovoid-angulate, ca. 1.2 × 0.8 mm, each side with several striae; caruncle absent. Fl. and fr. Aug-Dec. 2n = 32*.

This species is used medicinally. It has been much confused with Euphorbia indica but that species differs by the puberulent stems and capsules (see Raju & Rao, Indian J. Bot. 2: 202. 1979).

Fields, roads, scrub. Beijing, Guangdong, Guangxi, Guizhou, Hainan, Hunan, Jiangxi, Sichuan, Taiwan, Yunnan [New World; naturalized in many parts of the Old World].

生活型: 草本

栽培植物: 野生

特征: 草本;茎枝有短细毛或近于无毛,叶全缘,很少有细裂齿;花瓣状附片比腺体宽很多

花期: 7

生境: 见 于七星岩、草地上

门中名: 种子植物门

亚门中名: 被子植物亚门

纲中名: 双子叶植物纲


 

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