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| August 2007 at lowland swamp |
August 2007 at lowland swamp |
August 2007 at lowland swamp |
| Family | Cyperaceae |
| Scientific name | Cyperus haspan L. |
| Synonyms | Cyperus adenophorus Schrader ex Nees von Esenbeck; Cyperus americanus (Boeckeler) Palla; Cyperus aphyllus Vahl; Cyperus autumnalis Vahl; Cyperus cancellatus Ridley; Cyperus cayennensis Willdenow ex Link; Cyperus efoliatus Boeckeler; Cyperus gracilis Muhlenberg; Cyperus gramineus Roemer & Schultes; Cyperus haspan L. forma coarctatus (Nees von Esenbeck) Osten; Cyperus haspan L. subsp. juncoides (Lamarck) Kükenthal; Cyperus haspan L. var. adenophorus (Schrader ex Nees von Esenbeck) Kükenthal; Cyperus haspan L. var. americanus Boeckeler; Cyperus haspan L. var. amplissimus Kükenthal; Cyperus haspan L. var. bulboides Kükenthal; Cyperus haspan L. var. cancellatus (Ridley) Kükenthal; Cyperus haspan L. var. coarctatus Nees von Esenbeck; Cyperus haspan L. var. firmicaulis Kükenthal; Cyperus haspan L. var. flaccidissimus Kükenthal; Cyperus haspan L. var. indicus Boeckeler; Cyperus haspan L. var. junceus (Willdenow ex Link) Nees von Esenbeck; Cyperus haspan L. var. patulus Nees von Esenbeck; Cyperus haspan L. var. riparius (Schrader ex Nees von Esenbeck) Kükenthal; Cyperus haspan L. var. tuberiferus T. Koyama; Cyperus junceus Willdenow ex Link; Cyperus juncoides Lamarck; Cyperus laticulmis Sprengel; Cyperus leptos Schultes; Cyperus muehlenbergii Sprengel; Cyperus nudus Kunth; Cyperus pedatus Nees von Esenbeck; Cyperus planiculmis Steudel; Cyperus platyculmis R. Brown; Cyperus riparius Schrader ex Nees von Esenbeck; Cyperus stellatus Willdenow ex Link; Cyperus triqueter Boeckeler; Cyperus tunicatus Schultes; Cyperus vaginatus Willdenow ex Link; Mariscus pes-avium Bertoloni; Scirpus autumnalis Rottbøll |
| Common name | (Japanese common name) ko-aze-gayatsuri (コアゼガヤツリ, 小畦蚊帳吊 [meaning: tiny rice paddy path mosquito net hanging weed]) |
| (English common name) haspan flatsedge, sharp edge sedge, sheathed cyperus | |
| Distribution | (Japan) Honshu (west of Kanto region), Shikoku, Kyushu |
| (Other nations) China, Taiwan, Philippines, Malaysia, Australia, Pacific Islands, India, Africa, USA (throughout tropics) | |
| Habitat | Rice paddy, swamp |
| Chromosomal number | 2n=32 |
| Description | Plants culms 20-60cm tall. Leaves linear 2-6mm wide. Flowers inflorescences 8-15cm long, spikelets 5-15mm long, flowering in August to November. Perennial plants.. |
| Reference | Cyperus haspan L. |
| Cyperus haspan L. | |
| Cyperus haspan L. | |
| Cyperus haspan Linnaeus |
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| August 2007 at lowland swamp |
August 2007 at lowland swamp |
August 2007 at lowland swamp |
