African Plant Database


Disa aconitoides Sond.
Family : ORCHIDACEAE
Protologue : Linnaea 19: 91 (1846)
Information on the genus : Disa
 
 
Status
Status for SA : accepted (present)
Status for TA : accepted (present)
 
Synonym(s) Homotypic
 Disa aconitoides Sond. subsp. aconitoides
 
Taxon infra-specific
Disa aconitoides Sond. subsp. aconitoides
Disa aconitoides subsp. concinna (N.E. Br.) H. P. Linder
Disa aconitoides subsp. goetzeana (Kraenzl.) H. P. Linder
 
Ecology and distribution
Trop. Afr.
Biology : Terrestrial herb 10-20-65 cm tall; tubers ± ovoid, 1,5-3x1-2 cm, shortly tomentose; sterile stems very short with 2-3 overlapping sheaths and 1-2 leaves at apex , these linear-lanceolate, acute, 5-12x0,5-1 cm; flowering stems erect, leafy, with 4-8 leaves appressed to stem, lanceolate, acute, 4-10x1-2-3 cm; inflorescence lax, subcylindrical, 7-28 cm long, 2-4 cm Ø, 10-25-flowered; bracts long, narrowly lanceolate, 1,6-2,5 cm long; pedicel and ovary 1 cm long, ovary green with purple spots; flowers whitish to purple, purple-spotted; dorsal sepal conical, tapering gradually into a spur in the middle; spur erect 6-10 mm long, 3-6 mm Ø; lateral sepals narrowly oblong, 4-10x2-4 mm, apiculate; petals erect, oblanceolate, 3-6x1-2,5 mm, inside dorsal sepal; lip oblong, 5-7x2 mm, projecting forwards.
Ecology : Open woodland, Combretum-Terminalia or Brachystegia woodland; grassland, sometimes with scattered shrubs in areas formerly forested; swamp; swampy soil; edge of dambo; 600-2800 m alt. In the E African highlands W of Rift Valley.
  S. Africa, Swaziland. In Rwanda not recorded since 1950 (fide Fischer & al., 2010: l.c.).
  Comprises 3 subspp., 2 in our area, viz.: - subsp. concinna (N. E. Br.) H. P. Linder [bas.: D. concinna N. E. Br.; syn.: D. equestris Rchb. f. var. concinna (N. E. Br.) Kraenzl.; D. bisetosa Kraenzl.; D. dichroa sensu Williamson, Orchids S. Centr. Afr.: pl. 68, 1977, non Summerh.] with strongly apiculate sepals, in the highlands of SE tropical Africa; - subsp. goetzeana (Kraenzl.) H. P. Linder [bas.: D. goetzeana Kraenzl. 1900; syn.: D. vaginata Chiov. 1911, non Harvey 1842 (= D. vaginata), nom. illegit.; D. chiovendae Schltr.] in NE-E tropical Africa. – Subsp. aconitoides, with very long flower bracts, is restricted to S. Africa-Swaziland (map in Linder & Kurzweil, o.c.: 214).
  Similar to D. pulchella but petals longer than broad.
 
More info on :
see under Jstor_African Plant Initiative
see under African Plants - a Photo Guide
see under chg
see under Flore d'Afrique Centrale
see under The International Plant Name Index
 
Map
carte afrique num 175874
 
Record n°175874
Feedback about this record