| Cyperus digitatus | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Cyperaceae |
| Genus: | Cyperus |
| Species: | C. digitatus |
| Binomial name | |
| Cyperus digitatus | |
Cyperus digitatus, also known as finger flatsedge in the United States, [2] and chang xiao sui suo cao in China, [3] is a sedge of the family Cyperaceae that is native to tropical and subtropical areas of Africa, Asia, the Americas and Australia. [4] [5]
The grass like sedge typically grows to a height of 1 metre (3.3 ft). [5] The perennial sedge has short woody rhizomes and tufted smooth culms with a triangular cross-section that grow to a height of 0.5 to 1.5 m (1 ft 8 in to 4 ft 11 in). The leaves below are nearly the same length as the culms and have brown to purple coloured sheaths. The sub-leathery, flat to folded leaf blade has a width of 4 to 15 mm (0.16 to 0.59 in). It form as inflorescence with six to ten rays that have a length up to 18 cm (7.1 in) and have four to seven raylets that have cylindrical spikes that are 3 to 6 cm (1.2 to 2.4 in) long and 0.2 to 2 cm (0.079 to 0.787 in) wide. [6]
The species was first described by the botanist William Roxburgh in 1820 as a part of the work Flora Indica; or descriptions of Indian Plants. The type specimen was collected by Roxburgh in India. [3] It has ten synonyms including; Cyperus bourgaei, Cyperus digitatus var. laxiflorus, Cyperus digitatus var. pingbienensis and Cyperus mexicanus. [3]
In Asia the renge of the plant extends from Pakistan in the west to the eastern sea board of China in the east and extends doen through most of Malesia. In Australia is found in creek beds and other damp areas in a small area in the Kimberley region of Western Australia [5] as well as other northern tropical parts of the Northern Territory and Queensland. In the Americas it is found as far north as Texas with the range extending south through Central America and into South America as far south as Argentina. In Africa it is found as far north as Egypt south through the rest of the continent to Botswana. [4]
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.
Carex inversa, commonly known as knob sedge, is a species of sedge of the family Cyperaceae that is native to parts of Australia and New Zealand and has also been introduced into Great Britain.
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 betchei is a sedge of the family Cyperaceae that is native to 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 concinnus is a sedge of the family Cyperaceae that is native to Australia, and found in New South Wales, Queensland, the Northern Territory, South Australia, Victoria and Western Australia.
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 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 gymnocaulos, commonly known as spiny flatsedge, is a sedge of the family Cyperaceae that is native to Australia.
Cyperus hamulosus is a sedge of the family Cyperaceae. It is native from Bulgaria east to Mongolia, and from Morocco in northAfrica down to Namibia in the south. It has also been introduced to western parts of Australia.
Cyperus javanicus, also known as the Javanese flatsedge, is a sedge of the family Cyperaceae that is native to Indonesia and Australia.
Cyperus nutans is a sedge of the family Cyperaceae that is native to Australia, China, India, Bangladesh, south-east Asia, Malaysia, India, and Indonesia.
Cyperus rigidellus is a sedge of the family Cyperaceae that is native to 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 viscidulus is a sedge of the family Cyperaceae that is native to north western Australia.
Cyperus vorsteri is a sedge of the family Cyperaceae native to southern Africa.
Cyperus afroalpinus is a species of sedge that is native to Africa and was described by the botanist Kåre Arnstein Lye in 1983.
{{cite web}}: CS1 maint: multiple names: authors list (link)