Satyrium rostratum Lindl., Gen. Sp. Orchid. Pl.: 338 (1838).
Heterotypic Synonyms:
Satyrium gigas Ridl., J. Linn. Soc., Bot. 22: 126 (1886).
Large plants to 60-80 cm tall, leaves always more numerous than S. amoenum, unnoticeably, diminishing is size from the base to the apex. Inflorescence much larger (5cm. or more in diameter); flowers rose, much larger. Median sepal narrow, the laterals slightly falcate, all very obtuse. Petals similar to the median sepal. Labellum hood shaped-obtuse, tipped with a small lobule, which is attached-nipple like, just above the stigmas; spur filiform, 3.5-4.5 cm long. Column to 1 mm tall Anther provided apically with 3 short points; viscidiums nearly semi-circular, transverse, creased-gutter shaped below, 1.5 mm long; staminodes wide, emarginate apically. Rostellum with 3 short obtuse teeth, a very projecting keel, on the clinandrium, between the lobes of the anther, joining the median tooth.
Near forests, from 1200-2000 m alt.; very common; flowering in December-April. Plants very pretty, one of the prettiest terrestrial orchids of the Grand Isle.
NC. & C. Madagascar
Flora of Madagascar: vascular plants: 49th family, Orchids / by H. Perrier de La Bathie; published under the auspices of the government of Madagascar and under the direction of H. Humbert; English revision and translation by Steven D. Beckman; Orchids of Madagascar Hermans 2007; Field Guide to the Orchids of Madagascar Cribb & Herman 2009
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Habitat/In situ Habitat/In situ
satyrium rostratum 02  satyrium rostratum 
Photograph ©Gilles
Grunenwald. Image used
with kind permission. 
Photograph ©Gilles
Grunenwald. Image used
with kind permission.