Angraecum ampullaceum Bosser, Adansonia, n.s., 10: 109 (1970).
Homotypic Synonyms:
Jumellea humbertii H.Perrier, Notul. Syst. (Paris) 7: 60 (1938).
Arachnangraecum ampullaceum (Bosser) Szlach., Mytnik & Grochocka, Biodivers. Res. Conservation 29: 11 (2013).
Description:
Plants upright, stem rigid, to 60 cm tall, generally 8 mm in diameter, sheaths finely veined, bearing very numerous leaves, distichous, very short (8-10 x 2.2-2.5cm.), contracted. Pleated in the lower third, terminal lobes very unequal and obtuse. Inflorescences 9-10 cm long, unifloral or bifloral; peduncle 5- 6 cm clad toward the base with 3.4 short sheaths and bearing another further up on the peduncle longer and appressed; bracts large, attenuate-acute, generally 12 mm long, flowers white, largest of the genera, pedicel generally 3.5 cm long Sepals narrowly lanceolate (3.8-4 cm x 6-6.5 mm), sub acuminate, acute from the lower third to the apex, with 5 obsolete veins. Petals slightly shorter than the sepals slightly enlarged on the front margin above the base, with 9 visible veins. Labellum triangular-acute, 2.5.2.6 cm long, abruptly enlarged (1.8 cm wide) above the contracted base, then acuminate and very acute, provided with a keel on the upper surface, below the center; spur 11-13 cm long, attenuate gradually from the wide (5 mm) oriface to the apex. Column 6 mm tall, auricles curved-sickle shaped and acute behind; median tooth of the rostellum very short, deltoid-obtuse; rear margins of the clinandrium, at the point where the clinandrium attaches to the anther, enlarged, projecting-deltoid, thick, 1 mm tall and bifid apically.
Habitat:
Epiphytes of trunks, from 1400 m alt., flowering in November.
Cultivation:
As given for the genus
Distribution:
Madagascar
References:
WCSP (2017). 'World Checklist of Selected Plant Families. 24.01-2017; http://apps.kew.org/wcsp/
Images:
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