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This genus is accepted, and its native range is Cosmopolitan.
A specimen from Kew's Herbarium

[FSOM]

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit
Annuals or perennials, often with a horizontal rhizome
Morphology Stem
Stems triangular, 5-angular or almost terete, hairy or glabrous, with nodes and leaves throughout their length
Morphology Leaves
Leaf-blades usually flat and hairy at least along margin and at apex; sheaths closed; ligule prominent, tubular
Morphology Reproductive morphology Inflorescences
Inflorescence a paniculate corymb consisting of 1–several clusters of spikelets or compound corymbs of spikelets; lower inflorescence-bracts similar to the upper leaves
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets ovate to elongate, producing numerous bisexual flowers; the glumes spirally arranged or (more rarely) 5-ranked making the spikelets angular
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes reddish brown to greyish black, usually strongly hairy, and with the midrib excurrent into a straight or recurved mucro or awn
Morphology Reproductive morphology Flowers Perianth
Perianth-segments bristle-like, scale-like, or with a blade on a stalk, 3 or 6, or absent; the 2 whorls of 3 often of different type
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 2–3
Morphology Reproductive morphology Flowers Gynoecium Style
Style with 3 long hairy stigmas
Morphology Reproductive morphology Fruits
Nutlet obovate, 3-angular, smooth or irregularly wrinkled, falling off enclosed in the hypogynous scales or bristles when these are present.
Distribution
About 50 species in all tropical and warm temperate regions, but with more species in Africa and America.

[FTEA]

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

Morphology General Habit
Annual or perennial herbs; horizontal woody rhizomes present in perennials
Morphology Culms
Culms many-noded with leaves throughout their length
Morphology Leaves
Lower leaves with short lobes or reduced to sheaths, upper leaves with larger lobes; blade linear, hairy at least along the margin and at apex with unicellular hairs.
Morphology Leaves Leaf sheaths
Sheath well-developed, closed, hairy, ligule tubular and hairy
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle of (sub)digitate or corymbose clusters of spikelets, the branches usually hairy
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets consisting of many erect, loosely imbricate fertile glumes, the lowest 2–3 occasionally sterile, with many flowers
Morphology Reproductive morphology Flowers Florets
Florets bisexual, sessile, in the axil of a single glume.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glume with midrib excurrent into a mucro
Morphology Reproductive morphology Flowers Perianth
Perianth segments (** hypogynous bristles of C.B Clarke’s publications) 3 or 6 in 1–2 whorls, outer set of 3 bristles retrorsely barbed or smooth, inner set of 3 sessile or with a stalked lamina, reddish brown
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 1–3, with flattened filaments
Morphology Reproductive morphology Flowers Gynoecium Pistil
Pistil with a 3-branched style at apex
Morphology Reproductive morphology Fruits
Nutlet obovoid, triangular with prominent angles, base cuneate to obtuse, apex with persistent cylindrical style base, surface smooth or tuberculate, cell walls straight or sinuous.

Native to:

Afghanistan, Alabama, Algeria, Andaman Is., Angola, Argentina Northeast, Arkansas, Assam, Bangladesh, Belize, Benin, Bolivia, Borneo, Botswana, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Burkina, Burundi, Cambodia, Cameroon, Cape Provinces, Caprivi Strip, Caroline Is., Central African Repu, Chad, China South-Central, China Southeast, Colombia, Comoros, Congo, Connecticut, Corse, Costa Rica, Cuba, Delaware, District of Columbia, Dominican Republic, East Aegean Is., East Himalaya, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Ethiopia, Florida, Free State, French Guiana, Gabon, Gambia, Georgia, Ghana, Guatemala, Guinea, Guinea-Bissau, Gulf of Guinea Is., Guyana, Hainan, Haiti, Honduras, Illinois, India, Indiana, Iran, Italy, Ivory Coast, Jamaica, Japan, Jawa, Kansas, Kentucky, Kenya, Korea, Kriti, KwaZulu-Natal, Laos, Lebanon-Syria, Leeward Is., Lesotho, Lesser Sunda Is., Liberia, Louisiana, Madagascar, Malawi, Malaya, Mali, Marianas, Maryland, Massachusetts, Mauritania, Mauritius, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Michigan, Mississippi, Missouri, Morocco, Mozambique, Myanmar, Namibia, Nansei-shoto, Nebraska, Nepal, New Guinea, New Jersey, New Mexico, New South Wales, New York, Nicaragua, Nicobar Is., Niger, Nigeria, North Carolina, Northern Provinces, Northern Territory, Oklahoma, Ontario, Pakistan, Palestine, Panamá, Paraguay, Peru, Philippines, Portugal, Puerto Rico, Queensland, Rhode I., Rwanda, Réunion, Senegal, Sierra Leone, Socotra, Somalia, South Carolina, Spain, Sri Lanka, Sudan, Sulawesi, Sumatera, Suriname, Swaziland, Taiwan, Tanzania, Tennessee, Texas, Thailand, Tibet, Togo, Trinidad-Tobago, Tunisia, Turkey, Uganda, Uruguay, Venezuela, Venezuelan Antilles, Vietnam, Virginia, West Himalaya, Western Australia, Windward Is., Yemen, Zambia, Zaïre, Zimbabwe

Fuirena Rottb. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
s.coll. [Cat. no. 3542] K001119680
Wallich, N. [Cat. no. 3545], India K001119687
s.coll. [Cat. no. 3542] K001119679
De Silva, F. [Cat. no. 3544] K001119684
Wallich, N. [Cat. no. 3544], Myanmar K001119685
Bruce, H. [Cat. no. 3542] K001119678
s.coll. [Cat. no. 3544] K001119686
s.coll. [Cat. no. 3543] K001119681
s.coll. [Cat. no. 3544] K001119682
s.coll. [Cat. no. 3544] K001119683
s.coll. [Cat. no. s.n.], Myanmar K001132703

First published in Descr. Icon. Rar. Pl.: 70 (1773)

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.
  • Govaerts, R. (2004). World Checklist of Monocotyledons Database in ACCESS: 1-54382. The Board of Trustees of the Royal Botanic Gardens, Kew.

Literature

Flora of West Tropical Africa

  • Descr. et Ic. Pl. 70 (1773)
  • F.T.A. 8: 461 (1902).

Flora of Somalia

  • Flora Somalia, Vol 4, (1995) Author: by K. A. Lye [updated by M. Thulin 2008]

Flora of Tropical East Africa

  • Descr. Icon. Rar.: 70, t. 19 (1773)
  • K.B. 53: 187–202 (1998)

Flora of Somalia
Flora of Somalia
http://creativecommons.org/licenses/by-nc-sa/3.0

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 http://creativecommons.org/licenses/by/3.0/

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