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Dinghushan | Family List | Onagraceae | Ludwigia

Ludwigia hyssopifolia (G. Don) Exell

草龙

Description from Flora of China

Jussiaea hyssopifolia G. Don, Gen. Hist. 2: 693. 1832; J. linifolia Vahl; J. micrantha Kunze; Ludwigia micrantha (Kunze) H. Hara.

Herbs erect, annual, sometimes woody at base and perennial, often in water and then with elongate pneumatophores on submerged branches. Stems 50-300 cm tall, branched, new growth and inflorescence minutely puberulous. Petiole 3-18 mm; leaf blade lanceolate, 2-9 × 0.5-2 cm, subglabrous or puberulous, lateral veins 7-15 per side, submarginal vein inconspicuous, base narrowly cuneate, apex acuminate. Sepals 4, lanceolate, 2-4 mm, finely puberulous. Petals yellow, fading to orange-yellow, elliptic, 2-3 × 1-2 mm. Stamens 2 × as many as sepals; anthers 0.4-0.6 mm; pollen in monads. Style 1-1.5 mm; stigma depressed-globose. Capsule cylindric, subterete, enlarged in upper 1/6-1/3, 1.5-3 cm, finely puberulous, relatively thinly walled; subsessile. Seeds in inflated upper capsule in 2 or more rows per locule, free, pale brown, ovoid, 0.3-0.5 mm, raphe narrow; seeds in lower capsule in one row per locule, embedded in cube of relatively hard endocarp, brown, 0.7-0.9 mm, raphe ca. 1/3 width of seed. Fl. and fr. Jun-Feb. 2n = 16*.

Scattered to common in open wet often disturbed areas, streamsides, roadside ditches, clear agricultural land, or openings in moist forests; near sea level to 800 m. Fujian, Guangdong, Guangxi, Hainan, Taiwan, Yunnan [Bangladesh, Bhutan, India, Indonesia, Malaysia, Myanmar, Nepal, Philippines, Singapore, Sri Lanka, Thailand, Vietnam; widespread in Africa, SE Asia, Australia, Pacific islands, South America].

生活型: 草本

栽培植物: 野生

特征: 一年生、直立、亚灌木状无毛草本;

花期: 7--8

果期: 10

生境: 生于耕地、田边、路旁湿草地

用途: 全草药用,清热去湿、消肿拔毒,治湿热泄泻、感冒发热、口腔炎、咽喉肿痛及外敷疮疖烂肉

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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