African Plant Database


Disa aperta N.E. Br.
Family : ORCHIDACEAE
Protologue : Fl. Trop. Afr. [Oliver et al.] 7(2): 286 (1898)
Information on the genus : Disa
 
 
Status
Status for TA : accepted (present)
 
Ecology and distribution
Trop. Afr.
Biology : Terrestrial slender herb 25-45 cm tall; tubers ovoid, 1,5-2,5x1-1,5 cm, densely tomentose; sterile stem only slightly developed at anthesis, very short, with overlapping sheaths and a single narrow leaf; flowering stem leafy throughout; leaves 4-6, the lowest 1-2 sheath-like, the others erect, appressed to stem, lanceolate, acute, to 4,5-8x0,5-1,5 cm; inflorescence 4-17 cm long, 3-4,5 cm Ø, loosely 6-25-flowered; flowers whitish with purplish spots or markings; bracts thin, lanceolate, acuminate, 8-16 mm long; pedicel and ovary 10-14 mm long; dorsal sepal broadly elliptic, 6-10x3,5-6 mm, with spur at right angles, conical, 3-6 mm long; lateral sepals projecting forwards, oblong-elliptical, apiculate, 10-13x4-5 mm; petals triangular, 5,5-7x3 mm, inside dorsal sepal; lip patent, linear-elliptic, rounded, 6-11x c. 2 mm.
Ecology : Swamp, bog, dambo; grassland by streams; Brachystegia woodland; 900-2300 m alt.
  Easily confused with D. aconitoides, but lateral sepals longer than the dorsal.

Bibliography for Tropical Africa :
  • Exell, A. & Wild, H. (1995). Flora Zambesiaca: Mozambique, Federation of Rhodesia and Nyasaland, Bechuanaland Protectorate. London Kew 11[1]: 175
 
More info on :
see under Jstor_African Plant Initiative
see under The International Plant Name Index
 
Map
More information >> ( work in progress )
 
Record n°43382
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