Fuirena Rottb.

First published in Descr. Icon. Rar. Pl.: 70 (1773)
This genus is accepted
The native range of this genus is Cosmopolitan.

Descriptions

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.
[FSOM]

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.
[FTEA]

Sources

  • 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 Vascular Plants 2022. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2022. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0