2n = 84

2n = 60

2n = c. 84

2n = 45, 46

2n = 60

2n = 60

2n = 84

2n = 84

2n = 60

2n = 52

2n = 52

2n = 84

2n = 45–46

2n = 60

Raceme of few to c. 20 fls, sts reduced to one; floral bracts large, us. exceeding ovary. Per. glab., opening widely in sun; dorsal sepal uppermost, similar to lateral sepals and to petals. Labellum similar to petals and sepals, though sts differing slightly in shape. Column short, erect; wings joined in front at base and variously lobed and ornamented at sides and often behind anther; anther ± erect, us. partly or wholly hidden by wings, connective often produced into a short point, pollinia 2 per cell, pollen finely granular; stigma broad, flat, ± bilobed above, us. overlapping base of anther; rostellum small and narrow. Plants terrestrial, glab.; tubers ovoid, new one produced at base of parent plant. Lf solitary, sheathing at base, linear to lanceolate, often thick and fleshy; cauline bracts 1–2, foliaceous. Genus of c. 45 spp., mostly Australian and N.Z., extending also to Philippines and New Caledonia. Perhaps half of the N.Z. spp. endemic, the rest shared with Australia.