Angraecum ankeranense H.Perrier, Notul. Syst. (Paris) 7: 115 (1938).
Homotypic Synonyms:
Perrierangraecum ankeranense (H.Perrier) Szlach., Mytnik & Grochocka, Biodivers. Res. Conservation 29: 19 (2013).
Description:
Plants generally 15 cm tall stem 5-8 mm in diameter, bearing 5-6 apical leaves, sheaths generally 13 veined, leaves oval-oblong (2-3 x 11-1.4 cm), slightly pleated basally, slightly attenuate apically, coriaceous and thick, terminal lobes equal. Inflorescence single flowered, bur with the flower accompanied by a bracteole, which is the rudiment of a second non-developed flower; peduncle thick and very short (8 mm), entirely covered by the short, loose, very obtuse sheaths; flowers white. Sepals lanceolate (3.8 cm x 7.5 mm), longly attenuate-acute, 9 veined, slightly visible. Petals widely oval (3.5-3.7 x 2.2 cm) much larger in the lower third, attenuate above, then acuminate in a narrow point, provided above, toward the base, with a slightly visible costa, finely veined; spur cylindrical, 8 cm long, obviously curved apically. Anther conical and very obtuse, nearly taller (3.5 mm) than wide, shortly bifid in front, the sections obtuse, pollina hemispherical, black with their cauda retracted bandeletts oblong (3 x 0.5 mm), hyaline. Column very thick, clinandrium with the posterior margin enlarged-deltoid, 1 mm tall, auricles long and wide (3 mm), very obtuse in front, acute behind, median tongue of the rostellum linear, longer than the auricies. Pedicel 1-1.2 cm long, widely triwinged.
Habitat:
Epiphytes of trunks, in mossy forests, from 1300 m alt., flowering in February.
Cultivation:
As given for the genus, warm to cool growing epiphyte.
Distribution:
C. Madagascar
References:
Flora of Madagascar Perrier 1936/81; Cultivated Angraecoid Orchids Of Madagascar Hillerman & Holst 1986; Angraecoid Orchids Stewart, Hermans, Campbell 2006; Orchids of Madagascar Hermans 2007; Field Guide to the Orchids of Madagascar Cribb & Herman 2009; WCSP (2017). 'World Checklist of Selected Plant Families. 24.01-2017; http://apps.kew.org/wcsp/
Images:
Click on each image to see a larger version.
| In culture | In culture | In culture | In culture | In culture |
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| Photograph Gilles Grunenwald. Image used with kind permission. | Photograph Gilles Grunenwald. Image used with kind permission. | Photograph Gilles Grunenwald. Image used with kind permission. | Photograph Gilles Grunenwald. Image used with kind permission. | Photograph Gilles Grunenwald. Image used with kind permission. |
