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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, Morogoro District: Nguru Mountains, near Maskati Mission, Nkolawe Mt, Thulin & Mhoro 3039 (UPS, holo.; K!, iso.)
Morphology General Habit
Perennial up to 67 cm tall, fairly robust, with a thick creeping rhizome.
Morphology Culms
Culms scattered, 33–66 cm long, 1.4–1.8 m wide, trigonous, smooth
Morphology Leaves
Leaf blade linear, flat, 15–36 cm long, 2.8–4 mm wide, scabrid, apex acuminate Leaf sheath reddish-brown, rather wide and baggy, 2–5 cm long. Leaves up to 40 cm long.
Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like, spreading to erect, 2–3, lowermost 4–14 cm long, 2.5–2.9 mm wide
Morphology Reproductive morphology Inflorescences
Inflorescence simple, primary branches 2–5, 3–5 cm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets in digitate clusters, sessile and at the end of primary branches, 2–9 per cluster, ovoidlanceolate, 6 mm long, 2.4–3.2 mm wide, rachis straight.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes purplish-black, ovate, 2.1–2.2 mm long, 1–1.3 mm wide, keel pale brown (sometimes continuously purplish-black), apex excurrent
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments 1.7–1.9 mm long.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 0.9–1.1 mm long
Morphology Reproductive morphology Fruits
Nutlet glossy reddish-brown, obovoid, 0.9–1.1 mm long, 0.6–0.8 mm wide, densely set with irregular shiny translucent papillae.
Ecology
Montane forests and steep rocky slopes, swampy lake edge; 1700–2050 m
Conservation
Possibly neat threatened (NT) because of restricted distribution coupled to loss of montane forests.
Note
Lye stated this was closest to C. nyererei but differs in culm base, shorter spikelets and glumes, and shorter and more rounded nutlets. " Schlieben 4734b from T 2, Kilimanjaro at 1700 m in bushland, 28.2.1934, is similar but the inflorescence is rather young.
Distribution
Flora districts: T?2, T6 T7 Range: Not known elsewhere

Native to:

Tanzania

Cyperus purpureoviridis Lye appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Thulin, M. [3039], Tanzania K000321450 isotype
Schlieben, H.J. [4734], Tanzania K000321451 Unknown type material

First published in Nordic J. Bot. 3: 224 (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

Kew Backbone Distributions

  • Hoenselaar, K., Verdcourt, B. & Beentje, H. (2010). Cyperaceae Flora of Tropical East Africa: 1-466.

Flora of Tropical East Africa

  • Haines & Lye, Sedges & Rushes E. Afr.: 158, fig. 292 (1983).
  • Nordic Journ. Bot. 3: 224 (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