African Plant Database


Platycoryne buchananiana (Kraenzl.) Rolfe
Family : ORCHIDACEAE
Protologue : Fl. Trop. Afr. [Oliver et al.] 7(2): 257 (1898)
Information on the genus : Platycoryne
Basionym : Habenaria buchananiana Kraenzl.
 
 
Status
Status for TA : accepted (present)
 
Synonym(s) Homotypic
 Habenaria buchananiana Kraenzl. (1894)
 
Synonym(s) Heterotypic
=Platycoryne kitondo (De Wild.) Summerh.
=Habenaria kitondo De Wild. (1902)
=Habenaria ipyanae Schltr. (1915)
=Habenaria stolzii Kraenzl. (1912)
=Habenaria kitimboana Kraenzl. (1914)
 
Ecology and distribution
Trop. Afr.
Biology : Terrestrial herb 20-65 cm tall, glabrous except for tubers; tuber 1, ovoid, 1,5-2,5x0,5-1,5 cm; leaves cauline, 5-9, spread, the lower ones ± spreading, lanceolate, 3-7x0,5-1 cm, upper ones bract-like; inflorescence to 5,5 cm long (a head), densely 4-20-flowered; flowers rather small, incl. ovary bright orange or yellow (2 colour forms), sometimes scented; bracts 10-20 mm long; pedicel and ovary 10-20 mm long; dorsal sepal broadly ovate, 5-9x4-7 mm; laterals reflexed, elliptic, 5-10x2-3 mm, apiculate; petals erect, lanceolate, 3,5-8x1-3 mm, adnate to dorsal sepal; lip entire, ligulate, fleshy, 5-10x1-2 mm, pendent and curving forwards; spur 10-20 mm long, apex ± swollen.
Ecology : Poorly drained or wet or marshy grassland; dambo; in shallow soil over rocks; seepage slopes; 500-2000 m alt.
  Variable in size and colour of flowers.
  Note: Summerhayes in Kew Bull. 13: 63, 1958, remarks that Rolfe (Fl. Trop. Afr. 7: 257, 1898) included several species in his concept of P. buchananii, including P. pervillei, P. mediocris; this has caused difficulty for subsequent workers. – Piers, Orchids E. Afr., ed. 2: 53, 1968, treated P. buchananii as a synonym of P. crocea subsp. crocea (Kenya mostly). – Ball, Terrestr. Afric. orchids: 236-237, 2009, presents a mixed gathering from Zimbabwe, Umtali (Mutare), and Inyanga. They were tentatively listed under P. buchananiana. Plants previously referred to P. buchananiana from Mozambique are referable to P. pervillei.

Bibliography for Tropical Africa :
  • Exell, A. & Wild, H. (1995). Flora Zambesiaca: Mozambique, Federation of Rhodesia and Nyasaland, Bechuanaland Protectorate. London Kew 11[1]: 149
 
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see under Flore d'Afrique Centrale
see under The International Plant Name Index
see under Orchidées d'Afrique Centrale
see under African Plants - a Photo Guide
see under Tropicos.org. Missouri Botanical Garden
see under Flora of Zimbabwe
 
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Record n°44816 modified 2007-04-05
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