African Plant Database


Disa cornuta (L.) Sw.
Family : ORCHIDACEAE
Information on the genus : Disa
Basionym : Orchis cornuta L.
 
 
Status
Status for SA : accepted (present)
Status for TA : accepted (present)
 
Synonym(s) Homotypic
 Satyrium cornutum (L.) Thunb.
 Orchis cornuta L.
 
Synonym(s) Heterotypic
=Disa macrantha Sw. (1800)
=Disa cornuta var. aemula (Bolus) Kraenzl.
=Disa aemula Bolus (1885)
 
Ecology and distribution
Trop. Afr.
Biology : Terrestrial robust herb, “most attractive”, 60-100 cm tall, but usually c. 50 cm; stem leafy; leaves densely imbricate, lanceolate-narrowly ovate, 15-40 cm long, base shortly sheathing; inflorescence imbricate, robust, 15-40 cm long, numerous-flowered; bracts lanceolate, acuminate, often overtopping the flowers; flowers downward-facing, colours generally varying, with hood purple, lateral sepals greenish silvery-white, petals and lip greenish, lip often with a large purple base; ovary 15-20 mm long, twisted; dorsal sepal hood-like, 12-18 mm long, 8-12 mm deep, with spur from a horizontal conical base, decurved, cylindric, 10-20 mm long; lateral sepals patent, oblong, acute, 12-16 mm long; petals lorate, acute-acuminate, inside hood, 8-10 mm long, ± distinctly 2-lobed, with a 5 mm long basal anticous lobe flanking stigma; lip patent, lorate-obovate, 5-10 mm long.
Ecology : Acid sandy flats; sandstone mountain slopes; short montane grassland; occurring in both winter- and summer-rainfall regions.
  S. Africa, Lesotho.
  In cultivation requires an acid well-drained sandy soil.
South. Afr.
Biol./Eco : perennial-Herb, Geophyte- Ht 0.4 - 1 m. Alt: 5 - 2590 m. Distribution: LES, EC, KN, MP, WC

Bibliography for Southern Africa :
  • Orchids of Southern Africa : 211-212 (1999).
 
More info on :
see under Jstor_African Plant Initiative
see under chg
see under African Plants - a Photo Guide
see under Flora of Zimbabwe
 
Map
carte afrique num 43148
 
Record n°43148
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