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Dinghushan | Family List | Onagraceae | Ludwigia

Ludwigia adscendens (L.) Hara

水龙

Description from Flora of China

Jussiaea adscendens Linnaeus, Syst. Nat., ed. 12, 2: 297; Mant. Pl. 1: 69. 1767; J. repens Linnaeus.

Herbs perennial, with creeping or floating stems, rooting at nodes, with white, erect, short (1-3 cm), spindle-shaped pneumatophores in clusters at nodes of floating stems. Floating stems to 400 cm, terrestrial stems 20-60 cm, much branched, tips ascending, glabrous or densely villous. Petiole 5-20 mm; leaf blade oblong to spatulate-oblong, 0.4-7 × 0.7-3 cm, glabrous, lateral veins 6-13 per side, submarginal vein not prominent, base narrowly cuneate or attenuate, margin entire, apex obtuse to subacute. Sepals 5, deltoid-acuminate, 5-11 mm, glabrous or villous. Petals creamy-white with yellow base, obovate, 9-18 × 6-10 mm. Stamens 10; filaments white, 2.5-4 mm; anthers 0.7-1.8 mm; pollen in monads. Style white, 4-10 mm, glabrous; stigma discoid. Capsule light brown with dark brown ribs, cylindric, terete, 1.2-2.7 cm, 3-4 mm in diam., glabrous or villous, thickly walled, tardily and irregularly dehiscent; pedicel 1.5-5.5 cm. Seeds in one row per locule, firmly embedded in coherent cubes of woody endocarp fused to capsule wall, pale brown, oblong or elliptic, 1.1-1.3 mm, raphe inconspicuous. Fl. Apr-Nov, fr. May-Nov. 2n = 32*.

The plant is used medicinally for its febrifugal and antiswelling properties.

Wet swampy places, flooded rice paddies, often floating in water at edges of ponds, tanks, ditches; near sea level to 1600 m. Fujian, Guangdong, Guangxi, Hainan, Hunan, Jiangxi, Taiwan, Yunnan, Zhejiang [India, Indonesia, Japan, Malaysia, Nepal, Pakistan, Philippines, Sri Lanka, Thailand; widespread in Africa, S and SE Asia, Australia].

生活型: 草本

栽培植物: 野生

特征: 多年生草本;花白色

花期: 5--9

生境: 常见于水田、池塘中及水旁湿地

用途: 全草清热利尿、拔毒消肿,治感冒发热、小便淋沥刺痛(捣汁饮)及外用蛇伤、疮疖、狗咬伤和皮肤湿毒;猪、鱼饲料

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

中文别名: 过塘蛇、鱼卜草(高要、郁南)


 

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