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This variety is accepted, and its native range is Tropics & Subtropics.
A specimen from Kew's Herbarium

[FTEA]

Cyperaceae, K Hoenselaar, B. Verdcourt & H. Beentje. Hypolytrum, D Simpson. Fuirena, M Muasya. Flora of Tropical East Africa. 2010

Type
Type: Australia, F. Mueller s.n. (BM, holo.)
Morphology General Habit
Annual or short-lived perennial.
Morphology Culms
Culms 18–68 cm long, 1–3 mm wide, trigonous to sometimes slightly triquetrous
Morphology Leaves
Leaves up to 57 cm long. Leaf sheath 3–8.5 cm long. Leaf blade 10–48 cm long, 2–4.5 mm wide
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts 3–7, lowermost 6.8–35 cm long, 2.4–5.2 mm wide
Morphology Reproductive morphology Inflorescences
Inflorescence simple; primary branches 4–9, 2.7–8 cm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets clustered at the end of primary branches on an elongated axis. Spikelets 5–23 per cluster, narrowly ovoid-lanceolate, sometimes narrowly ovoid, 8–15 mm long, 0.9–1.8 mm wide.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes ovate, golden yellowbrown, 1.3–2.3 mm long, 0.8–1.3 mm wide, keel flat to rounded, (0–)1–3-veined, yellow-brown to green, apex obtuse to acute
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 2–3: filaments 0.7–2 mm long.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 0.35–0.6 mm long
Morphology Reproductive morphology Fruits
Nutlets dark grey-brown to dark metallic grey, 0.7–1.1 mm long, 0.3–0.4 mm wide, minutely punctuate.
Ecology
Swamps, lake shores and short grassland with standing water; 0–1200 m
Conservation
Least concern (LC) due to its wide distribution
Distribution
Range: Pantropical Flora districts: U4 K7 T6 T8 Z P

Native to:

Alabama, Andaman Is., Angola, Arkansas, Assam, Bahamas, Belize, Borneo, Brazil Northeast, Cape Verde, Central African Repu, Costa Rica, Cuba, Delaware, District of Columbia, Ecuador, Eritrea, Florida, Galápagos, Gambia, Georgia, Guatemala, Guinea, Guinea-Bissau, Hawaii, India, Jamaica, Kentucky, Kenya, Leeward Is., Louisiana, Maine, Malaya, Mali, Maryland, Massachusetts, Mexico Gulf, Mexico Southwest, Mississippi, Missouri, Namibia, New Jersey, New York, Nicobar Is., North Carolina, Northern Territory, Oklahoma, Panamá, Paraguay, Pennsylvania, Philippines, Senegal, Sierra Leone, South Carolina, Sri Lanka, Tanzania, Tennessee, Texas, Thailand, Uganda, Venezuela, Vietnam, Virginia, West Virginia, Windward Is., Zaïre

Extinct in:

Mauritius

Cyperus polystachyos var. holosericeus (Link) C.B.Clarke appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Nov 27, 1897 Grey, I. [s.n.], Mauritius Pycreus polystachyos var. laxiflorus K000363059
Nov 1, 1897 Grey, I. [s.n.], Mauritius Pycreus polystachyos var. laxiflorus K000363060

First published in J. Linn. Soc., Bot. 21: 55 (1884)

Not accepted by

  • Govaerts, R. & Simpson, D.A. (2007). World Checklist of Cyperaceae. Sedges: 1-765. The Board of Trustees of the Royal Botanic Gardens, Kew. [Cited as Pycreus polystachyos var. microdontus.]

Literature

Kew Backbone Distributions

  • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
  • Boudet, G., Lebrun, J.P. & Demange, R. (1986). Catalogue des plantes vasculaires du Mali: 1-465. Etudes d'Elevage et de Médecine Vétérinaire des Pays Tropicaux.
  • Boulvert, Y. (1977). Catalogue de la Flore de Centrafrique 2(2): 1-94. ORSTOM, Bangui.
  • Jaramillo Díaz, P. & Guézou, A. (2017). CDF Checklist of Galapagos Vascular Plants - FCD Lista de especies de Plantas Vasculares de Galápagos http://www.darwinfoundation.org/datazone/checklists/vascular-plants/.
  • Lejoy, J., Ndjele, M.-B. & Geerinck, D. (2010). Catalogue-flore des plantes vasculaires des districts de Kisangani et de la Tshopo (RD Congo) Taxonomania. Revue de Taxonomie et de Nomenclature Botaniques 30: 1-307.
  • Marais, W. & Araujo, A.C. (2018). Flore des Mascareignes 202: 1-99. IRD Éditions, MSIRI, RBG-Kew, Paris.
  • Naik, M.C. & al. (2017). Additions to Flora of Andaman and Nicobar islands, India Indian Journal of Forestry 40: 289-292.
  • Prasad, V.P. (2017). Notes on sedges (Cyperaceae) of Andaman and Nicobar islands - seven new records and five exclusions Nelumbo 59: 155-158.

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew K000363059

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0