Cyperus vaginatus

Cyperus vaginatus, commonly known as stiff-leaf sedge or stiff flat-sedge, is a sedge of the family Cyperaceae that is native to Australia.[1]

Stiff-leaf sedge
Cyperus vaginatus flowers
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Cyperaceae
Genus: Cyperus
Species:
C. vaginatus
Binomial name
Cyperus vaginatus
Cyperus vaginatus habit

Description

The rhizomatous perennial herb grass-like sedge typically grows to a height of 0.3 to 2 metres (1.0 to 6.6 ft) and has a tufted habit. It blooms between November and February producing green-brown flowers.[1] The culms are rigid with a terete arrangement. The culms grow to around 1 metre (3.3 ft) in height and have a diameter of about 3 millimetres (0.12 in). The leaves are just sheaths. The simple or compound inflorescence has four to twelve primary branches up to a length of approximately 6 centimetres (2.4 in) but usually shorter.[2] The spikelets are flattened with between four and fifteen in each cluster each are 5 to 18 mm (0.20 to 0.71 in) long and 2 to 2.8 mm (0.08 to 0.11 in) in width.[3] Following flowering a grey-brown trigonous nut with an obovoid to ellipsoid shape will form. The nut is around 0.6 to 0.8 mm (0.024 to 0.031 in) in length with a diameter of about 0.5 mm (0.020 in).[2]

Taxonomy

The species was first formally described by the botanist Robert Brown in the work Prodromus Florae Novae Hollandiae et Insulae Van Diemen that was published in 1810. The samples were collected in 1802 during an expedition by HMS Investigator and Géographe to map the South Australian coastline.[4]

The species name vaginatus is taken from the Latin word, vagina, meaning sheath.[5]

Distribution

The plant is found in subtropical regions extending into tropical areas in the northern end of its range.[6] In Western Australia it is found along creeks and streams in the Kimberley, Pilbara, Gascoyne, Mid West and Goldfields-Esperance regions where it grows in sandy-clay alluvium often around limestone.[1] The species is also found in north western and south eastern South Australia,[7] Victoria,[3] Queensland, the Northern Territory and New South Wales.[2] It will grow well in full sun to part shade in well-drained soils but can need watering in summer when cultivated.[8]

In Victoria the species was once found in the Grampians and around Swan Hill but no specimens have been collected in 1913 and it is now possibly extinct in these areas.[3]

Uses

Cyperus vaginatus can be harvested from the wild as a source of fibre. The fibre is taken from the outer parts of the stems and is traditionally used by Indigenous Australians to make nets and cordage.[6]

The species is known to attract butterflies.[9]

gollark: Just as planned.
gollark: https://osmarks.net/rssgood/
gollark: I assume it can't really be or they'd have done so.
gollark: Something something CRDTs maybe.
gollark: If it could somehow be done neatly it would be very cool.

See also

References
  1. "Cyperus vaginatus". FloraBase. Western Australian Government Department of Parks and Wildlife.
  2. "Cyperus vaginatus R.Br". PlantNet. Royal Botanic Garden, Sydney. Retrieved 7 October 2017.
  3. "Cyperus vaginatus R.Br". VicFlora. Royal Botanic Gardens Foundation Victoria. Retrieved 7 October 2017.
  4. R.M.Barker (2007). "The botanical legacy of 1802:South Australian plants collected by Robert Brown and Peter Good on Matthew Flinders' Investigator and by the French scientists on Baudin's Géographe and Naturaliste" (PDF). Journal of Adelaide Botanical Gardens. Retrieved 7 October 2017.
  5. "Cyperus vaginatus Common name: Stiffleaf Sedge". Friends of Queens Park Bushland. Retrieved 8 October 2017.
  6. "Cyperus vaginatus R.Br. Cyperaceae". Useful Tropical Plants. Retrieved 7 October 2017.
  7. "Cyperus vaginatus (Cyperaceae) Putta-putta". Seeds of South Australia. Government of South Australia. Retrieved 7 October 2017.
  8. "Local native plant ID sheet for the Fleurieu Milk & Yoghurt Company fencing and revegetation project" (PDF). Government of South Australia. Retrieved 7 October 2017.
  9. "Stiff flat-sedge Cyperus vaginatus". Butterfly Conservation SA Inc. Retrieved 7 October 2017.
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