African Plant Database


Polystachya adansoniae Rchb. f.
Family : ORCHIDACEAE
Information on the genus : Polystachya
 
 
Status
Status for TA : accepted (present)
 
Synonym(s) Homotypic
 Polystachya adansoniae Rchb. f. var. adansoniae
 
Synonym(s) Heterotypic
=Polystachya dusenii Kraenzl. (1894)
=Polystachya caillei Guillaumin (1920)
=Polystachya nigerica Rendle (1913)
=Polystachya alboviolacea Kraenzl. (1893)
 
Taxon infra-specific
Polystachya adansoniae Rchb. f. var. adansoniae
Polystachya adansoniae var. elongata Summerh.
Polystachya adansoniae var. stuhlmannii (Kraenzl.) Geerinck
 
Ecology and distribution
Trop. Afr.
Biology : Epiphytic, sometimes lithophytic herb 10-30 cm tall; pseudobulbs densely clustered on rhizome, cylindrical-conical, 1,5-9-14x0,5-1 cm, ribbed, covered with 2-4 leaf sheaths at base; leaves 2-4, oblong, 5-20x0,6-1,8 cm, bright green shining, apex unequally and obtusely 2-lobed; inflorescence 3-5-20 cm long, densely 25-200-flowered, simple or with 1 branch 3 cm long at base; peduncle 9 cm long, subtended by a flattened sheath, densely pubescent like rhachis; flowers tiny, ciliolate outside, whitish with purple, very fragrant (of primrose); bracts setaceous, 2-9 mm long; pedicel and ovary 2-4 mm long, arched, glabrous; tepals acuminate; dorsal sepal ovate, thin, 2-4x1-1,5 mm, laterals triangular, 2-5x3 mm; lip shortly clawed, 2-4x1-3 mm, 3-lobed in apical half, with an apical fleshy and hairy callus at junction of lobes, lobes rounded; spur (mentum) sacciform, c. 2 mm long.
Ecology : Rain-forest, evergreen forest, secondary forest; well-drained gallery forest; fringing forest at swamp edge; swampy formations; high rainfall Brachystegia woodland; termitaria; high-level epiphyte on trees; often on Adansonia digitata, Prunus africana, Brachystegia boehmii, palm trunks; on rocks; 0-2620 m alt.
  Related to P. stuhlmannii, P. moniquetiana, P. polychaete (key in Syst. Geogr. Pl. 73: 283, 2003).
  Bioko/Fernando Poo, S. Tomé, Annob?n
 
More info on :
see under Jstor_African Plant Initiative
see under Flore d'Afrique Centrale
see under Flora of Mozambique
see under Orchidées d'Afrique Centrale
see under Flora of Zimbabwe
 
Map
More information >> ( work in progress )
 
Record n°175890
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