| Spiny flatsedge | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Cyperaceae |
| Genus: | Cyperus |
| Species: | C. gymnocaulos |
| Binomial name | |
| Cyperus gymnocaulos | |
Cyperus gymnocaulos, commonly known as spiny flatsedge, is a sedge of the family Cyperaceae that is native to Australia. [1]
The rhizomatous perennial grass-like sedge typically grows to a height of 0.35 to 1 metre (1.1 to 3.3 ft) and has a tufted habit. It blooms between July and March producing brown flowers. [1] It normally has a short thick rhizome with smooth, trigonous and terete culms. The leaves are reduced to sheaths, except for juvenile plants. [2]
C. gymnocaulos is usually smaller and less robust than C. vaginatus . [2]
The species was first formally described by the botanist Ernst Gottlieb von Steudel in 1854 as part of the work Synopsis Plantarum Glumacearum. Known synonyms include; Cyperus cruciformis and Cyperus vaginatus var. densiflorus. The name is commonly misapplied to Cyperus textilis . [3]
It is found in swamps and along creeks and rivers and other damp areas in all the states of mainland Australia as well as the Northern Territory. [2] In Western Australia it is found in the Mid West, Wheatbelt, South West and Goldfields-Esperance regions where it grows in sandy-clay soils. [1]
Cyperus polystachyos, also known as Pycreus polystachyos, and also called manyspike flatsedge in the US, or bunchy sedge, coast flatsedge, many-spiked sedge or Texas sedge in Australia, is a herbaceous species in the family Cyperaceae, widespread in tropical and subtropical areas around the world, sometimes extending its range into temperate regions.
Cyperus alopecuroides, commonly known as the foxtail flatsedge, is a sedge of the family Cyperaceae that is native to parts of Africa, Asia and Australia.
Cyperus alterniflorus, commonly known as umbrella flat-sedge, is a sedge of the family Cyperaceae that is native to Australia.
Cyperus astartodes is a sedge of the family Cyperaceae that is native to northern parts of Australia.
Cyperus compressus, commonly known as annual sedge, is a sedge of the family Cyperaceae that has a wide distribution throughout countries with warmer climates. It is found in tropical areas of Africa, Asia and the Americas.
Cyperus congestus, commonly known as dense flat-sedge or clustered flat-sedge, is a sedge of the family Cyperaceae that is native to southern Africa mostly in South Africa, Lesotho and Namibia.
Cyperus cuspidatus, commonly known as the coastal plain flatsedge, is a sedge of the family Cyperaceae that is native to seasonally dry tropical areas of Africa, Asia, the Americas and Australia.
Cyperus dactylotes is a sedge of the family Cyperaceae that is native to all of mainland Australia except for Victoria.
Cyperus digitatus, also known as finger flatsedge in the United States, and chang xiao sui suo cao in China, is a sedge of the family Cyperaceae that is native to tropical and subtropical areas of Africa, Asia, the Americas and Australia.
Cyperus flaccidus is a sedge of the family Cyperaceae that is native to Australia.
Cyperus gilesii, commonly known as Giles' flat-sedge, is a sedge of the Cyperaceae that is native to Australia.
Cyperus javanicus, also known as the Javanese flatsedge, is a sedge of the family Cyperaceae that is native to Indonesia and Australia.
Cyperus pulchellus is a sedge of the family Cyperaceae that is native to northern Australia, tropical Africa, northwest Madagascar and Southeast Asia.
Cyperus rigidellus is a sedge of the family Cyperaceae that is native to Australia.
Cyperus tenellus is a sedge of the family Cyperaceae commonly known as the tiny flatsedge.
Cyperus tenuispica is a sedge of the family Cyperaceae that is native to seasonally dry tropical areas of Africa, Asia and Australia.
Cyperus vaginatus, commonly known as stiff-leaf sedge or stiff flat-sedge, is a sedge of the family Cyperaceae that is native to Australia.
Cyperus victoriensis, also known as channel nut grass is a sedge of the family Cyperaceae that is native to all the states and territories of mainland Australia.
Cyperus vorsteri is a sedge of the family Cyperaceae native to southern Africa.
Cyperus zollingeri, commonly known as roadside flatsedge, is a sedge of the family Cyperaceae that is native to tropical areas of Australia, Africa and Asia.