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Dinghushan | Family List | Alismataceae | Sagittaria

Sagittaria pygmaea Miq.


Description from Flora of China

Sagittaria altigena Handel-Mazzetti ex Samuelsson; S. sagittifolia Linnaeus var. pygmaea (Miquel) Makino.

Plants stoloniferous. Petiole indistinct; leaf blade linear or subspatulate, 2-29 cm × 2-11 mm, sheathing basally, apex acuminate or obtuse. Inflorescences racemose, 1-10 cm, in 2 or 3 whorls of 3 flowers; bracts elliptic. Flowers unisexual; female flowers not exceeding 2, restricted to lowest whorl, sessile or only with very short pedicels; male flowers with pedicels 0.5-3 cm. Sepals obovate, 5-7 × 3-5 mm. Petals orbicular, 1-1.5 × 1-1.6 cm. Stamens 6-21; anthers yellow. Achenes broadly obovoid, 3-5 × 3-3.5 mm, abaxially cristate, with a broad wing and an adaxial beak. Fl. and fr. May-Nov. 2n = 22*.

Specimens with one whorl of staminodes and leaves retuse at apex from Dongchuan, Yunnan, which were described as Sagittaria altigena, appear to be in the range of variety of this species rather than a distinct taxon.

Paddy fields, marshes, and channels. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Shandong, Sichuan, Taiwan, Yunnan, Zhejiang [Japan (including Ryukyu Islands), Korea, Thailand, Vietnam].

生活型: 草本

栽培植物: 野生

特征: 水生草本;

花期: 夏秋

果期: 夏秋

生境: 生于水田中

用途: 稻田有害杂草。全草作猪饲料;入药治疮毒、湿疹、喉炎

门中名: 种子植物门

亚门中名: 被子植物亚门

纲中名: 单子叶植物纲

中文别名: 鸭舌草


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