Angraecum rostratum Ridl., J. Linn. Soc., Bot. 21: 485 (1885).
Homotypic Synonyms:
Angorchis rostrata (Ridl.) Kuntze, Revis. Gen. Pl. 2: 651 (1891).
Monixus rostratus (Ridl.) Finet, Mém. Soc. Bot. France 9: 17 (1907).
Angraecoides rostrata (Ridl.) Szlach., Mytnik & Grochocka, Biodivers. Res. Conservation 29: 10 (2013).
Description:
Plants with a long (30 cm), thin stem; sheaths traversely rugose; leaves numerous, lanceolate-obtuse, 18-25 mm long, thick, slightly sickle shaped and ascending. Inflorescences from amongst the leaves, longer than the leaves, peduncle very thin, 12 mm long, flowers greenish. Sepals widely linear-obtuse, fleshy, 7-8 mm long. Petals linear-lanceolate, enlarged basally, obtuse apically, nearly cylindrical apically. Labellum 12 mm long, concave and very enlarged above the base in the lower third, elongated in an elongated rostrum and acute; spur nearly equal to the length of the sepals, horizontal, slightly enlarged clavate and recurved apically. Column short; auricles subsquare, truncate in front; median tongue of the rostellum long and fine. Anther emarginate in front; cauda 2, joined in their lower half (according to Finet). Pedicel 10-12 mm long.
Habitat:
Grows epiphyticahly in moss forest at around 1,500 meters in altitude.
Cultivation:
As given for the genus.
Distribution:
SE. Madagascar
References:
Flore de Madagaskar, Plantes Vasculaires, 49 Famille - Orchidees (Lissochilus - Oenia); WCSP (2017). 'World Checklist of Selected Plant Families. 28.01-2017; http://apps.kew.org/wcsp/
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