Base de données des plantes d'Afrique


Sansevieria gracilis N.E. Br.
Famille : Dracaenaceae
Famille (APGIII) : ASPARAGACEAE
Protologue : Bull. Misc. Inform. Kew 96 (1911)
Informations sur le genre : Sansevieria
 
 
Statut
Statut pour TA : accepté, NF (présent)
 
Synonyme(s) homotypique(s)
 Sansevieria gracilis N.E. Br. var. gracilis
 
Synonyme(s) hétérotypique(s)
=Sansevieria caulescens N.E. Br. (1915)
 
Taxons infra-spécifiques
Sansevieria gracilis N.E. Br. var. gracilis
Sansevieria gracilis var. humbertiana (Guillaumin) Mbugua (2007)
 
Ecologie et distribution
Afr. Trop.
Biologie : Caulescent perennial, and slightly ascending to spreading; with ascending runners, to 90 cm long, 0,8 cm Ø; stem erect, absent or to 8 cm long, with aerial branching and rooting; runners covered with ovate acute spine-pointed tough scale-leaves, the upper ones turning into leaves 1-4,5 cm long, grey-brown when dry, margins white-membranous; leaves closely packed, rosulate, 6-12 per plant, concave near base, cylindrical above, 25-75 cm long, 0,6-1,3 cm wide at top of sheath, spirally arranged, straight, curved or slightly sinuous, firmly flexible, concave down the face, very rounded on the back, gradually tapering to a very acute spine-like brown or whitish point 0,2-0,6 cm long, surface smooth; inflorescence a lax spike-like raceme 15-30 cm long, axis light green 2-4 cm Ø; flowers 2 per cluster, ascending; lower inflorescence bracts 2-3, 2-4 cm long; perianth white; tube 1,9-2,5 cm long, lobes 1-1,2 cm long; berry globose.
Ecologie : Dry bushland and thicket; often on rocky outcrops in shallow soils; also in grassland and evergreen bushland; may form dense stands; 30-600 m alt.
  Very variable in growth habit; in size from very small to very large.
 
Plus d'info sur :
voir d'autres informations sous Jstor_African Plant Initiative
voir d'autres informations sous The International Plant Name Index
 
Carte
carte afrique num 14189
 
Enregistrement n°14189
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