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This species is accepted, and its native range is Tanzania.
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: Tanzania, Iringa District: N part of Gologolo Mts, Thulin & Mhoro 965 (UPS, holo.; K!, iso.)
Morphology General Habit
Perennial, slender, tussocky, up to 53 cm tall.
Morphology Culms
Culms tufted, 12–50 cm long, 0.5–2 mm wide, trigonous, glabrous, the basal culms narrow cylindric
Morphology Leaves
Leaf blade linear, folded to canaliculate, 8–30 cm long, 1–2 mm wide, scabrid at least along the margin, apex acuminate Leaf sheath pale brown to transparent, 3–12 cm long. Leaves up to 36 cm long.
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like, erect to spreading, 3–4, lowermost 8.5–40 cm long, 1.8–2 mm wide
Morphology Reproductive morphology Inflorescences
Inflorescence a simple anthela, primary branches 1–3, 0.5–2.5 cm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets in rounded clusters, sessile and at the end of primary branches, 10–30 per cluster, lanceolate, 2.5–3.7 mm long, 0.7–1 mm wide, falling off entirely when mature.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes pale to reddish-brown, ovate-lanceolate, 1.8–3.1 mm long, 1.4–1.5 mm wide, keel with 5 veins on either side, rounded
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 2–3.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments ± 3.3 mm long
Morphology Reproductive morphology Fruits
Nutlet reddish-brown, ellipsoid, trigonous, 1–1.9 mm long, 0.5–0.8 mm wide, very minutely papillose.
Ecology
On granite slab and in rock crevices; 1700–2300 m
Conservation
Small distribution area, but in a safe habitat; least concern (LC)
Note
Lye also cites Procter 3849 from K as this species; it is from T 3, 1050 m. I have not seen the specimen.
Distribution
Range: Not known elsewhere Flora districts: T6 T7

Native to:

Tanzania

Cyperus longi-involucratus Lye appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Mar 1, 2009 Thulin [965], Tanzania K000743737 isotype

First published in Nordic J. Bot. 3: 220 (1983)

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. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.
  • Hoenselaar, K., Verdcourt, B. & Beentje, H. (2010). Cyperaceae Flora of Tropical East Africa: 1-466.

Literature

Flora of Tropical East Africa

  • Haines & Lye, Sedges & Rushes E. Afr.: 208, fig. 417 (1983).
  • Nordic Journ. Bot. 3: 220 (1983)

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