Angraecum dryadum Schltr., Repert. Spec. Nov. Regni Veg. Beih. 33: 326 (1925).
Homotypic Synonyms:
Perrierangraecum dryadum (Schltr.) Szlach., Mytnik & Grochocka, Biodivers. Res. Conservation 29: 20 (2013).
Description:
Plant, 10-15 cm tall, stem thick and short (8-10 mm in diameter); sheaths traversely rugose and striate veined 7-10 sub distichous , short leaves (20-40 x 6-10 mm ), unequally bilobed obtuse apically Inflorescence, from in the lower leaf sheath, covered by the 3-4 sheaths, 8-9 mm long, covering the bracts basally, bract large, short and obtuse, covering about the lower third of the pedicel Sepals oval-lanceolate, acute (22-30 x4- 6 mm, toward the base, the median more concave the laterals joined basally, with the spur by a thin membrane. Petals narrowly lanceolate (22 x 3.5 mm), very acute Labellum widely oval-acute or sub acuminate (22-30 x 11-13 mm below the center) very narrow basally; 25-29 veined, not grouped ii fascicle, basally hare above, spur with a thin oriface, thin from the base and 10-13 cm long, column very, wide or wider than long. provided basally with 2 rudimentry arms, inserted into the spur oriface, auricles rounded on their back edge and other wise angled on their front margin; median tongue or linear-narrow, as long as the auricles. Anther thick with a connective and emarginate apically, pollina with their cauda retracted; cauda 2 hyaline, l.6 mm long. Pedicel 25mm long, compressed, the ovary triwinged.
Habitat:
Epiphyte, in forests, from 1000-2000 m alt., flowering in December-February.
Cultivation:
As given for the genus, cool growing epiphyte.
Notes:
This species has the column of the Jumelleas, but with the petals and lateral sepals not joined to, the rudimentary arms, of the column and with the limbus of the labellum evolved in the spur oriface.
Distribution:
Madagascar
References:
Flora Of Madagascar Perrier 1939/1981; 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:
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