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Dinghushan | Family List | Lythraceae | Rotala

Rotala rotundifolia (Buch.-Ham. ex Roxb.) Koehne

圆叶节节菜

Description from Flora of China

Ammannia rotundifolia Buchanan-Hamilton ex Roxburgh, Fl. Ind. 1: 446. 1820; A. subspicata Bentham.

Herbs, perennial or possibly annual, to 30 cm. Stem creeping or floating, red-tinged; internodes of basal stem portion usually much longer than subtending leaves. Leaves decussate, obovate-elliptic to orbicular or elliptic, 5-13 × 3.5-15 mm, base obtuse, apex obtuse. Bracts distinctly smaller than foliage leaves, ca. 3 × 1.5 mm, ca. equal to floral tube. Flowers in 1-8 terminal, emergent spikes; spikes 1-4(-8) cm, lax in fruit; bracteoles slightly shorter than sepals, scarious. Floral tube 4-merous, campanulate, 1-1.5 mm; sepals 4; epicalyx absent. Petals 4, bright rose, surpassing sepals. Stamens 4; anthers reaching margin of floral tube. Ovary pyriform to globose; style included, shorter than ovary; stigma discoid, ca. 0.3 mm in diam. Capsules globose, ca. 1.5 mm in diam., 4-valved. Seeds ca. 0.5 mm. Fl. and fr. Nov-Jun. 2n = 16*, 28, 30.

Marshes, streamsides, paddy fields, mountains; below 2700 m. Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hubei, Hunan, Jiangxi, Shandong, Sichuan, Taiwan, Yunnan, Zhejiang [Bangladesh, Bhutan, India, Japan, Laos, Myanmar, Nepal, Thailand, Vietnam].

生活型: 草本

栽培植物: 野生

特征: 一年生草本;

花期: 2--4

生境: 生于耕地、路旁、田边草地湿处

用途: 全草清热解毒,消肿,治蛇伤、狗咬伤、疮毒,牙龈肿痛、乳红肿等症

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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