| Cyperus vorsteri | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Cyperaceae |
| Genus: | Cyperus |
| Species: | C. vorsteri |
| Binomial name | |
| Cyperus vorsteri | |
| Synonyms [1] | |
Mariscus grantii C.B.Clarke | |
Cyperus vorsteri is a sedge of the family Cyperaceae native to KwaZulu-Natal in South Africa. [2]
The rhizomatous perennial sedge typically grows to a height of 1.5 metres (4.9 ft) and has a robust tufted habit. [3] The triquetrous and smooth culms usually grow to a height of 0.5 to 1.5 m (1.6 to 4.9 ft) and have a diameter of around 8 millimetres (0.31 in). The strongly septate-nodulose deep-green leaves are often longer than culms and have a width of 7 to 14 mm (0.28 to 0.55 in). [4] The plant flowers in spring, between August and November. [5] It forms compound to decompound inflorescences that have with seven to thirteen branches that are up to 10 centimetres (3.9 in) in length. The spikes have a cylindrical form and are around 2 cm (0.79 in) long with a diameter of around 1 cm (0.39 in). Following flowering it will form a dark yellow-brown trigonous nut with a narrow-obovoid to narrow-ellipsoid shape. The nut has a length of 1.8 to 2.3 mm (0.07 to 0.09 in) and a diameter of about 0.6 mm (0.02 in). [4]
The species was originally described as Mariscus grantii by the botanist Charles Baron Clarke in 1898 as part of the Thiselton-Dyer work Cyperaceae. Flora Capensis. [1] [6] It was subsequently reclassified into the genus Cyperus in 1994 by Karen Wilson in the work New taxa and combinations in the family Cyperaceae in eastern Australia published in the journal Telopea . [7] [8]
The species is endemic to South Africa. [4] It has been introduced in Western Australia where it is found along streams and creeks in Kalamunda in the outer metropolitan region of Perth where it grows in sandy-clay soils. [3] It has also become naturalised in areas in and around Sydney where it is often found in disturbed areas of woodland and parks. [4]
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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 cracens is a sedge of the family Cyperaceae that is native to northern and north western parts of 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 hesperius is a sedge of the family Cyperaceae that is native to Australia.
Cyperus latzii is a sedge of the family Cyperaceae that is native to Australia, and found in the Northern Territory and Western 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 orgadophilus is a sedge of the family Cyperaceae that is native to Australia, in Western Australia, the Northern Territory, and Queensland.
Cyperus portae-tartari is a sedge of the family Cyperaceae that is native to Australia, and found in the Northern Territory and Western Australia.
Cyperus pygmaeus, also known as dwarf flat sedge, is a sedge of the family Cyperaceae that is native to Australia.
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 eglobosus is a species of sedge that is native to Queensland and New South Wales in eastern Australia.