African Plant Database


Pycreus demangei J. Raynal
Information on the genus : Pycreus
 
 
Status
Status for TA : accepted (present)
 
Synonym(s) Homotypic
 Cyperus demangei (J. Raynal) Lye
 
Ecology and distribution
Trop. Afr.
Biology : Annual herb to 30 cm tall with submerged leaves and emergent inflorescence (neither leaves nor culms able to support themselves out of water); culms filiform, tufted, 2-20 cm long, 0,3-0,6 mm Ø, rounded to trigonous; leaf sheaths 1-2,5 cm long, pale brown, sometimes reddish-brown; blades filiform, 7-10,5 cm long, 0,5-1 mm wide, acuminate; inflorescence a simple lax anthela with primary branches 3-4, 1-4 cm long; spikelets in clusters, sessile and at end of primary branches, 1-4 per cluster, linear, 4-10x1,5-2 mm.
Ecology : Seasonal pools; flooded plains and pans; to (1000-)1400 m alt.
  Ecology similar to that of P. waillyi, which is, however, completely submerged except for its spikelets.

Bibliography for Tropical Africa :
  • BOUDET G. & J.P. LEBRUN (1986). Catalogue des plantes vasculaires du Mali. Etudes et Synthèses IEMVT 16 : 362
  • CÉSAR J. & C. CHATELAIN (2019). Flore illustrée du Tchad. Conservatoire et Jardin botaniques de Genève, Coopération Suisse & Univ. N'Djaména : 129
 
More info on :
see under Jstor_African Plant Initiative
 
Map
More information >> ( work in progress )
 
Record n°36282
Feedback about this record