Cynorkis angustipetala var. oligadenia (Schltr.) H.Perrier, in Fl. Madag. 49(1): 145 (1939).
Homotypic Synonyms:

Cynorkis oligadenia Schltr., Repert. Spec. Nov. Regni Veg. Beih. 33: 62 (1924).
Description:

Plants with 2 radical leaves; anther without the apicule, median lobe of the rostellum entire apically; flowers with several small glands.
Habitat:
Distribution:

NC. Madagascar