| Platycoryne buchananiana (Kraenzl.) Rolfe |
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| Famille : ORCHIDACEAE |
| Protologue : Fl. Trop. Afr. [Oliver et al.] 7(2): 257 (1898) |
| Informations sur le genre : Platycoryne |
| Basionyme : Habenaria buchananiana Kraenzl. |
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Statut
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| Statut pour TA : | accepté (présent) |
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| Synonyme(s) homotypique(s) |
 Habenaria buchananiana Kraenzl. (1894) |
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| Synonyme(s) hétérotypique(s) |
| =Platycoryne kitondo (De Wild.) Summerh. |
| =Habenaria kitondo De Wild. (1902) |
| =Habenaria ipyanae Schltr. (1915) |
| =Habenaria stolzii Kraenzl. (1912) |
| =Habenaria kitimboana Kraenzl. (1914) |
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| Ecologie et distribution |
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| Biologie : |
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. |
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| Ecologie : |
Poorly drained or wet or marshy grassland; dambo; in shallow soil over rocks; seepage slopes; 500-2000 m alt. |
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Variable in size and colour of flowers. |
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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. |
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Bibliographie pour l'Afrique Tropicale :
- Exell, A. & Wild, H. (1995). Flora Zambesiaca: Mozambique, Federation of Rhodesia and Nyasaland, Bechuanaland Protectorate. London Kew 11[1]: 149
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| Plus d'info sur : |
| voir d'autres informations sous Jstor_African Plant Initiative |
| voir d'autres informations sous Flore d'Afrique Centrale |
| voir d'autres informations sous The International Plant Name Index |
| voir d'autres informations sous Orchidées d'Afrique Centrale |
| voir d'autres informations sous African Plants - a Photo Guide |
| voir d'autres informations sous Tropicos.org. Missouri Botanical Garden |
| voir d'autres informations sous Flora of Zimbabwe |
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| Enregistrement n°44816 modifié le 2007-04-05 |
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