Cyperus imbricatus Retz.

The description is primarily based on five specimens from India.

Perennial, 30-60 cm. Rhizome short, ascending or horizontal, with tillers. Stem 2-3 mm diam., trigonous, smooth, lower edges obtuse. Leaves shorter than or equalling stem; sheaths to 20 cm, soft, brown or dark brown, often reddish, mouth margin slightly concave; blades to c. 40 cm long, to 5.5 mm wide, flat or folded, keeled, margins narrowly recurved, margins and keel towards apex scabrous, apex trigonous, acute, scabrous. Inflorescence 5-15 cm, a conical or rounded anthelodium; 4 or 5 lowermost bracts leaf-like, to more than 40 cm; primary branches commonly 5-8, to 80 mm, tubular prophyll c. 10 mm, bi-nerved; secondary anthelodia to c. 40 mm, of 5-8 spreading clusters of spikes; sometimes small tertiary anthelodia by 2-3 clusters of spikes, c. 7 mm; cluster of spikes 10-35 x 3-8 mm, with c. 20 to over 100 spikes closely imbricating, spirally, some at cluster base often digitately arranged; cluster rachis reddish brown, angular, narrowly winged; spikes not reflexed, 4-8 x c. 1.5 mm, glume-like bract, c. 0.8 mm, bi-nerved glume-like prophyll, c. 0.6 mm, rachis c. 0.3 mm wide, flat, quadrangular, internodes c. 0.25 mm; glumes c. 1.5 mm, cymbiform, slightly keeled, mucronate, sides obscurely nerved, reddish brown, margins widely scarious, sligthly inrolled. Nut 0.6 x 0.3 mm, ellipsoid, obtusely trigonous, yellowish brown, very finely reticulate, almost smooth.

Cosmopolitan.

Distribution: Pantropical.

Fl. Per.: June.

Alluvial marshes.

Cyperus radiatus Vahl, Enum. Pl. 2: 369. 1805; Kükenthal, in Engler, Pflanzenr. IV.20, 101: fig. 9, G-J. 1935.

Cyperus imbricatus, also known as the shingle flatsedge, is a species of sedge that is native to sub-tropical and tropical areas of the world.

The sedge is a rhizomatous, robust and perennial sedge with a natural distribution through pantropical areas that is also known as an agricultural and environmental weed.

Cyperus imbricatus adalah spesies tumbuhan yang tergolong ke dalam famili Cyperaceae. Spesies ini juga merupakan bagian dari ordo Poales. Spesies Cyperus imbricatus sendiri merupakan bagian dari genus Cyperus. Nama ilmiah dari spesies ini pertama kali diterbitkan oleh Retz..

Cyperus imbricatus là loài thực vật có hoa trong họ Cói. Loài này được Retz. mô tả khoa học đầu tiên năm 1788.

叠穗莎草（学名：Cyperus imbricatus）为莎草科莎草属的植物。分布于马来亚、越南、马尔加什、非洲以及美洲、日本、台湾岛、印度以及中国大陆的广东等地，生长于海拔1,370米的地区，多生长在浅水塘和荫湿的地方，目前尚未由人工引种栽培。