Benthamia nivea subsp. parviflora H.Perrier, Bull. Soc. Bot. France 81: 34 (1934).
Description:

Differing from the type by the smaller flowers (5-6 mm without the pedicel); the labellum with the lateral lobes acute and only 3 veined, but being visible to the apex of the median lobe, the 2 laterals branching in the lateral lobes: the staminodes half as wide, and the rostellum with its 3 teeth equal.
Habitat:

In mossy forests from 2000 m alt.: flowering April.
Distribution:

N. Madagascar