African Plant Database

Pycreus atrorubidus Nelmes
Information on the genus : Pycreus
Status for TA : accepted (present)
Synonym(s) Homotypic
 Cyperus atrorubidus (Nelmes) Raymond
Ecology and distribution
Trop. Afr.
Biology : Annual herb, ± caespitose, glabrous, 4-20 cm tall; culms erect, ± 3-gonous; leaves 6-8 per culm, all basal, filiform, 5-8 cm x 0,5-1 mm; sheath reddish; inflorescence a simple anthela, a sessile cluster appearing lateral, at 4 cm below apex of inflorescence axis, and a suberect bract 2 cm long; spikelets 1-10 per cluster, flattened, ovate, 5-10x c. 2 mm, apex acute, 10-18-flowered; glumes c. 2 mm long, dense, ovate, dark red-black, margins yellow.
Ecology : Shallow moist peaty soil overlying laterite; shallow hollows on rocks; peat-bog on ferrugineous conglomerate; damp places; dried-up hollow; sometimes in stands; 450-1900 m alt.
  Confused with P. rubidomontanus.
  The “seeds” (achenes) of these [i.a. P. atrorubidus] sedges must be highly resistant to heat for they successfully withstand about six months dessiccation in full exposure to sunshine.

Bibliography for Southern Africa :
  • Kew Bull. 1951: 319-321 (1952)
  • HUTCHINSON, J. & J.M. DALZIEL (1972). Flora of West Tropical Africa: Second Edition 3[2]: 302
More info on :
see under Jstor_African Plant Initiative
More information >> ( work in progress )
Record n°36236
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