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Dinghushan | Family List | Poaceae | Dactyloctenium

Dactyloctenium aegyptium (L.) Willd.


Description from Flora of China

Cynosurus aegyptius Linnaeus, Sp. Pl. 1: 72. 1753; Chlo-ris mucronata Michaux; Eleusine aegyptia (Linnaeus) Desfontaines; E. pectinata Moench, nom. illeg. superfl.

Annual. Culms slender to moderately robust, geniculately ascending to shortly stoloniferous and mat-forming, infrequently erect, 15–60 cm tall. Leaf sheaths with ciliate margin; leaf blades flat, 5–20 × 0.2–0.6 cm, tuberculate-pilose on both surfaces, apex acute or acuminate; ligule membranous, 1–2 mm, margin ciliate. Inflorescence digitate, racemes 2–9, linear to narrowly oblong, often radiating horizontally. Spikelets broadly ovate, 3–4.5 mm, florets 3–4; lower glume narrowly lanceolate, keel thick, hispidulous; upper glume elliptic to narrowly obovate, keel smooth, extended into a stout scabrid awn 1/2–2 times length of glume body; lemmas ovate, 2.6–4 mm, keel gibbous, hispidulous above middle, often extended into a stout cusp; palea equal to lemma, keels winged, wings ciliolate, tip 2-toothed. Grain ca. 1 mm, broadly obtriangular, transversely rugose. Fl. and fr. May–Oct. 2n = 20, 36, 40, 48.

Willdenow misspelled the specific epithet as "aegyptiacus," but this is simply an orthographical error, and does not affect the valid publication of the combination.

This is a widely distributed, annual weed.

Disturbed weedy places, especially on sandy soils. Fujian, Guangdong, Guizhou, Hainan, Sichuan, Taiwan, Yunnan, Zhejiang [tropical and warm-temperate regions of the Old World; introduced to America and Europe].

生活型: 草本

栽培植物: 野生

特征: 一年生草本;

花期: 夏秋

果期: 夏秋

生境: 生于山坡或旷野草地

用途: 可作草皮及牧草

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


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