Cyperus involucratus Rottb.

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Cyperus involucratus

Photo: Bart Wursten
Hillside Park, Harare

Cyperus involucratus

Photo: Bart Wursten
Hillside Park, Harare

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Synonyms: Cyperus alternifolius L. subsp. flabelliformis Kük.
Cyperus flabelliformis Rottb.
Common names:
Frequency: Frequent
Status: Native [and introduced?]
Description:
Robust perennial, with a 2-10 cm thick creeping woody rhizome. Culms 25-150 cm × 1.5-7 mm, with sheaths and scales below. Leaves 0. Inflorescence a compound anthela, 5-25 cm in diameter, subtended by numerous (15-25) leafy involucral bracts; bracts 10-35 cm × 3-20 mm, spirally arranged. Secondary subumbels composed of few-many stalked inflorescence clusters. Spikelets flattened, brown, 15-30 flowered, arranged in digitate clusters. Glumes 1-2 mm, straw-coloured or golden to reddish-brown, shining; midrib 3-keeled. Stamens 3. Stigmas 3. Nutlet 0.8-0.9 mm, brownish, minutely papillose.
Notes: The status of this plant is not clear to me. Some of the plants seen appear to be garden escapes.
Derivation of specific name:
Habitat: In vleis and marshy grassland and on stream banks, also cultivated in gardens and occasionally escaping into ditches.
Altitude range: (metres)
Flowering time:
Worldwide distribution:
Zimbabwe distribution: N,W,C,E,S
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Images last updated: Sunday 13 November 2005
Literature:

Burrows, J.E. & Willis, C.K. (eds) (2005). Plants of the Nyika Plateau Southern African Botanical Diversity Network Report No. 31 SABONET, Pretoria Page 300.

Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 119.

Strugnell, A.M. (2006). A Checklist of the Spermatophytes of Mount Mulanje, Malawi Scripta Botanica Belgica 34 National Botanic Garden of Belgium Page 76. as Cyperus alternifolius


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Other sources of information about Cyperus involucratus:

Our websites:

Flora of Botswana: Cyperus involucratus
Flora of Malawi: Cyperus involucratus
Flora of Zambia: Cyperus involucratus

External websites:

African Plant Database: Cyperus involucratus
Biodiversity Explorer (Biodiversity of southern Africa): Cyperus involucratus
EOL (Encyclopedia of Life): Cyperus involucratus
ePIC (electronic Plant Information Center): Cyperus involucratus
Flora Zambesiaca web site: Cyperus involucratus
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Cyperus involucratus
IPNI (International Plant Names Index): Cyperus involucratus
Ispot Southern Africa : Cyperus involucratus
JSTOR Plant Science: Cyperus involucratus
Kew Herbarium catalogue: Cyperus involucratus
Kew Monocotyledon checklist: Cyperus involucratus
Tropicos: Cyperus involucratus
West African Plants database: Cyperus involucratus


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-16

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2016). Flora of Zimbabwe: Species information: Cyperus involucratus.
http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=109580, retrieved 24 July 2016

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