Calochilus robertsonii Benth.
Original localities: Victoria, Australia.
Plant slender to robust, perhaps not reaching such lengths as C. paludosus, but lf us. broader. Bracts, racemes, sepals and petals much as in C. paludosus. Labellum c. 2 × sepals; ligulate apex short, ± twisted; disc broad with long dense processes; base covered with short rounded calli. Column-wings each with one well-defined, us. dark gland or callus near base.
DIST.: N. "Not uncommon between Rotorua and Taupo . . . on roadsides, in tussock and in scrub" (Hatch). S. Near Kaiteriteri, Nelson, "Burnt-over slopes, now in young pines", I. M. Ritchie, 9/12/1965.
Also in all other Australian States.
Plants from the Rotorua district described in detail by Kirk (T.N.Z.I. 24, 1892, 427) and attributed to C. campestris appear to belong rather to C. robertsonii.
The "transverse raised plate" connecting the bases of the 2 column-wings is not always distinct in N.Z. specimens. In the Kaiteriteri fls the very narrow labellar apex bears processes almost to its tip, as in C. gracillima Rupp.