Cyperus vorsteri

Cyperus vorsteri is a sedge of the family Cyperaceae native to southern Africa.[1]

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

Mariscus grantii C.B.Clarke

Description

The rhizomatous perennial sedge typically grows to a height of 1.5 metres (4.9 ft) and has a robust tufted habit.[2] 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).[3] The plant flowers in spring, between August and November.[4] 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).[3]

Taxonomy

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. It was subsequently reclassified into the genus Cyperus in 1994 by K.L.Wilson in the work New taxa and combinations in the family Cyperaceae in eastern Australia published in the journal Telopea.[5]

Distribution

The species is endemic to South Africa.[3] 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.[2] It has also become naturalised in areas in and around Sydney where it is often found in disturbed areas of woodland and parks.[3]

gollark: I bet that in a few decades you'll be thrown in prison for thinking of robbing a bank anyway and DC's trade hub rules from today will be seen as allowing too much freedom.
gollark: ***aargh why***
gollark: Meanwhile, people continue to insist that adding more rules to the hub will somehow make the rules... *looser!*
gollark: ***all shall hatch***
gollark: Pygmies are the opposite of my megadragon idea though.

See also

References
  1. "Genus: Cyperus, Species native to southern Africa". Biodiversity explorer. Retrieved 8 October 2017.
  2. "Cyperus vorsteri". FloraBase. Western Australian Government Department of Parks and Wildlife.
  3. "Cyperus vorsteri K.L.Wilson". PlantNET. Royal Botanic Garden, Sydney. Retrieved 8 October 2017.
  4. "Cyperaceae – Sedge Family". Weed Society of Western Australia. Retrieved 8 October 2017.
  5. "Cyperus vorsteri K.L.Wilson". Atlas of Living Australia. Global Biodiversity Information Facility. Retrieved 8 October 2017.
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