Fl. solitary or very few in loose raceme; floral bracts us. 2–3, small. Per. glandular-pubescent; dorsal sepal uppermost, erect or ± incurved over column, us. narrow; lateral sepals and petals sub-similar and sts spreading symmetrically. Labellum very shortly clawed, half-erect, undivided or 3-lobed; margins often fringed or toothed; calli ± clavate, in ± regular longitudinal rows. Column elongate, erect to incurved, winged; anther terminal, apiculate, surface often papillose, pollinia 2 per cell, pollen finely granular; stigma discoid, inclined downwards; rostellum median. Plants terrestrial, with pilose or glandular hairs; tubers ± globose, the new ones produced ± within lf-sheaths. Lf solitary, ± hirsute, linear to lanceolate. Genus of c. 75 spp. mainly Australian but also in Malaysia and New Caledonia. The 2 N.Z. spp. both occur also in Australia, being one of the 15 spp. originally included in the genus by Robert Brown.

This genus of 2 spp. was based on specimens sent to Rogers by H. B. Matthews who had had plants under observation near Kaitaia for several years from 1912 onwards. Superficially, as noted by Rogers, both spp. bear a striking resemblance to , the distinguishing feature being the petal-like form of the labellum. The following key to the spp. is given: