Angraecum danguyanum H.Perrier, Notul. Syst. (Paris) 7: 107 (1938).
Homotypic Synonyms:
Arachnangraecum danguyanum (H.Perrier) Szlach., Mytnik & Grochocka, Biodivers. Res. Conservation 29: 11 (2013).
Description:
Plants with pendent stems, 15-20 cm long, thin (l mm in diameter), slightly sinuate, covered by the traversely rugose, striate sheaths, bearing 12-14 distant leaves near the apex, attenuate linear (3.5.5 cm x 1.2 mm), nearly semi-cylindrical recurved, Inflorescences single flowered, from in the axillary sheaths 4.5 cm long, peduncle (10-15 mm) thin, bearing 1-2 basal sheaths; bracts tubular, obtuse, 2 mm long; pedicel 3-32 cm flower, white, Median sepal elliptical (15 x 6 mm) apiculate obtuse and 3 veined the laterals bifurcate basally, laterals falciform and slightly longer, Petals narrowly falciform (11 x 2.5 mm) acute, 2 or 3 veined. Labellum very widely oval-obtuse (1.5 x 1.2 cm), bare basally and 9 veined, the 5 median simple, spur 6-7 cm long, attenuate from the narrow oriface to the apex. Anther excised apically, with a slightly thickened verrucose connective appendage behind; pollina spherical with the cauda retracted bandeletts distinct oblong hyaline and longer than the anther. Column short; rear margins of the clinandrium emarginate to the anther and bidentate on both edges of the notch; auricles wide (1.5 mm), in front, rounded, acute behind; median longue of the rostellum acicular, 1 mm long, much shorter than the auricles,
Habitat:
Epiphytes of trunks: in eastern forests, from 700 m alt., flowering in February.
Cultivation:
As given for the genus, warm growing epiphyte.
Distribution:
NE. Madagascar
References:
Flora Of Madagascar Perrier 1939/81; Orchids of Madagascar Hermans 2007; Field Guide to the Orchids of Madagascar Cribb & Herman 2009; WCSP (2017). 'World Checklist of Selected Plant Families. 27.01-2017; http://apps.kew.org/wcsp/
Images:
Click on each image to see a larger version.
