Compilation
Cyperus rigidifolius

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Name

Identification
Isotype of Cyperus rigidifolius Steud. [family CYPERACEAE ] (stored under name); Verified by Reid, C.,
Related name
  • Cyperus tenuiflorus
  • `
  • Cyperus adoensis
  • Cyperus rigidifolius
  • Cyperus atrosanguineus

Flora

Entry for CYPERUS rigidifolius Steud. [family CYPERACEAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical Africa, Vol 8, page 264, (1902) Author: (By C. B. Clarke.)
Names
CYPERUS rigidifolius Steud. [family CYPERACEAE], in Flora, 1842, 593. —Steud. Syn. Pl. Glum. ii. 30; A. Rich. Tent. Fl. Abyss. ii. 486; Boeck. in Linnæa, xxxv. 528; C. B. Clarke in Durand & Schinz, Conspect. Fl. Afr. v. 573; K. Schum. in Engl. Pfl. Ost-Afr. C. 118.
CYPERUS adoensis Hochst. [family CYPERACEAE], in Flora, 1841, i. Intell. 20, name only; A. Rich. Tent. Fl. Abyss. ii. 484.
CYPERUS longus Boeck. var. adoensis [family CYPERACEAE], in Linnæa, xxxvi. 281; Engl. Hochgebirgsfl. Trop. Afr. 142.
CYPERUS atrosanguineus Hochst. ex Steud. [family CYPERACEAE], Syn. Pl. Glum. ii. 30; Boeck. in Linnæa, xxxv. 527; Engl. Hochgebirgsfl. Trop. Afr. 140.
Information
Glabrous. Stolons hardening into rhizomes 8 in. long, 1/8 in. in diam. Stems 8–20 in. long, rather stout, at the base not or slightly bulbous, at the top trigonous and smooth. Leaves 1/2– 2/3 the length of the stem, 1/8– 1/4 in. broad. Umbel 6–8 in. in diam. or often less (sometimes reduced to a head); primary rays 3–7, the secondary rays at the head of each corymbose and contracted nearly into a head; bracts 3–5, similar to the leaves, overtopping the umbel. Spikes of 3–5 chestnut-brown or nearly black spikelets. Spikelets 2/5 by 1/12 in., compressed, rigid, 8–16-flowered, suberect; wings of rhachilla ovate-lanceolate, prominent. Glumes obtuse, on the back 5-nerved, yellow-green, on the sides nearly nerveless reddish-black; otherwise nearly as C. rotundus .
Distribution
Abyssinia Nile Land near Adowa, Schimper, 186! near Enjedcap, Schimper, 991! near Magdala, Steudner, 901! Begemeder; Jan Meda, Schimper, 1290! Gafat, Schimper, 1247! and without precise locality, Schimper, 229!German East Africa Mozamb. Dist. Kilimanjaro, 5000–6000 ft., Volkens, 662! 1397! 1467! Taylor! Kanesse, west of Lake Victoria, Stuhlmann, 940!British East Africa Nile Land marshes by Lake Nakuro, Scott-Elliot, 6842! Mpororo district, Scott-Elliot, 8042! Ndoro, on Mount Kenia, Gregory, 78!

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