Cynorkis sacculata Schltr., Beih. Bot. Centralbl. 34(2): 310 (1916).
Homotypic Synonyms:

Bicornella sacculata (Schltr.) Szlach. & Kras, Richardiana 6: 146 (2006).
Description:

Plants completely aphyllous at flowering, 12-25 cm tall, tubers oblong and villous; scape hispid-glandular, bearing several acuminate sheaths. Inflorescence nearly loose, to 4.5 cm tall, 8-15 flowered, flowers small (9-12 mm including the pedicel) and brownish; bracts shorter than the pedicel. Sepals, oval-oblong, obtuse, bearing several glands exteriorly, 3 veined, slightly visible. 3.5-4 mm long, the median concave-cucullate, the laterals oblique. Petals I veined, narrowly elliptical-subacute (4 x 0.8 mm Labellum 3.5-4 mm) shortly unguiculate basally, trilobed, the lateral lobes linear and very small, the median large (4 mm wide), flabelliform. Compressed basally, retuse and apiculate in front; spur saccate-connical and obtuse, wider basally than long (2-3 mm). Anther 0.8 mm tall. Rostellum l mm long, entire apically. Pedicel 4-6 mm long, bristly-glandular.
Habitat:

In ericoid bushes, from 2300 m alt., flowering in February.
Distribution:

C. Madagascar