Oeonia curvata Bosser in Adansonia22 (2): 231 (2000).
Long-stemmed epiphytic plants wit unbranched roots. Leaves leathery, ovate, unequally bilobed at the apex, about 2 cm long and 1 cm broad; leaf sheaths persistent, shorter than the internodes. Inflorescences 1-2-flowered, arising at the base of the leaf sheaths. Peduncle stout, obliquely erect, 5-7 cm long; floral bracts broadly ovate, obtuse, 3-4 mm long. Flowers white. Dorsal sepal spathulate, the apex acute, 10 x 5 mm; lateral sepals similar but slightly narrower. Petals narrowly ovate, spathulate, acute, 10-12 x 3 mm. Lip 25 mm long and broad, four-lobed; side lobes broad, erect, rounded, the margins undulate; terminal lobes smaller and narrower, falcate, the apices truncate, separated by a narrow sinus; base of lip funnel- shaped, prolonged into a cylindrical spur 13-15 mm long, slender, curved, the tip obtuse. Column 2 mm long; anther hemispherical, truncate in front.
This rare and little-known species resembles Oeonia madagascariensis in the shape of the spur but differs in the falcate terminal lip lobes separated by a narrow sinus and in the shape of the anther, which is hemispherical and truncate in front (in Oeonia madagascariensis, the anther has a bilobed projection on the apex).
Grows in mid-altitude forest, between 1,200 and 1,400 m. Apparently it has only been collected once, in the Ranomafana National Park.
As given for the genus, cool growing epiphyte.
Endemic to Madagascar
Field Guide to the Orchids of Mdagascar Cribb & Hermans 2009; WCSP (2017). 'World Checklist of Selected Plant Families. 09.03-2017;
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Habitat/In situ Habitat/In situ
Oeonia curvata 03 Oeonia curvata 04
Photograph ©Gilles Grunenwald. Image used with kind permission. Photograph ©Gilles Grunenwald. Image used with kind permission.