Cyperus rotundus




Family Cyperaceae
Scientific name Cyperus rotundus L.
Synonyms Chlorocyperus rotundus (L.) Palla; Cyperus agrestis Willdenow ex Link; Cyperus comosus Sibthorp & Smith; Cyperus curvatus Llanos; Cyperus herbicavus Melliss; Cyperus hexastachyos Rottbøll; Cyperus hydra Michaux; Cyperus inconspicuus Gennari; Cyperus laevissimus Steudel; Cyperus micreilema Steudel; Cyperus olivaris O. Targioni-Tozzetti; Cyperus patulus Marschall von Bieberstein; Cyperus purpureovariegatus Boeckeler; Cyperus radicosus Sibthorp & Smith; Cyperus rotundatus Koorders; Cyperus rotundus L. forma brevibracteatus Legrand ex Husnot; Cyperus rotundus L. forma contractus Kükenthal; Cyperus rotundus L. forma depallescens Ekman & Kükenthal; Cyperus rotundus L. forma latifolius Kükenthal; Cyperus rotundus L. forma latimarginatus Kükenthal; Cyperus rotundus L. var. centiflorus C. B. Clarke; Cyperus rotundus L. var. comosus (Sibthorp & Smith) K. Richter; Cyperus rotundus L. var. elongatus Boeckeler; Cyperus rotundus L. var. hydra (Michaux) A. Gray; Cyperus rotundus L. var. inconspicuus K. Richter; Cyperus rotundus L. var. major Parlatore; Cyperus rotundus L. var. mucrostahyus Boissier; Cyperus rotundus L. var. quimoyensis L. Dai; Cyperus rotundus L. var. salsolus C. B. Clarke; Cyperus rotundus L. var. subcapitatus (C. B. Clarke) Kükenthal; Cyperus rubicundus Willdenow ex Link; Cyperus stoloniferus Retzius var. pallidus Boeckeler; Cyperus subcapitatus C. B. Clarke; Cyperus tetrastachyos Desfontaines; Cyperus tuberosus Roxburgh, non Rottboel; Pycreus rotundus (L.) Hayek
Common name (Japanese common name) hama-suge [coastal sedge]
(English common name) coco-grass, nut sedge, nut-grass, purple nut sedge, red nut sedge
Distribution (Japan) Honshu (west of Kanto region), Shikoku, Kyushu
(Other nations) worldwide
Chromosomal number 2n=108
Description Plants culms 15-40cm. Leaves 2-6mm width. Flowers inflorescences 5-10cm, spikelets 1.5-3cm, flowering in June to October. Perennial plants..
Reference Cyperus rotundus Linnaeus
Cyperus rotundus L.
Cyperus rotundus L.



June 2007 at roadside June 2007 at roadside June 2007 at roadside



June 2007 at roadside