Corybas nanus P.Royen, Phanerog. Monogr. 16 (1983) 48, fig. 9
Type: NGF (Millar) 23170 (holo LAE; iso BISH)
Small, 3 cm high terrestrial. Tuber ellipsoid-ovoid, 0.2-0.4 by 0.2-0.3 cm. Stem 2 cm high, 2-ribbed, glabrous. Cataphyll present or not, tubular-funnel-shaped, 0.7 cm long, subcaudate, 1-nerved, glabrous. Leaves broadly ovate-cordate, 1.5 by 1.4 cm, apiculate, at the base cordate but cuneate at very base, mid-rib slightly grooved above, slightly crested below mainly in basal part, basal nerves 2 on either side of mid-rib, only inner basal nerve reaching tip of leaf-blade, cross-veins 2 or 3 on either side of mid-rib, connate to inner basal nerve, venation widely reticulate, margin wavy-crinkly, slightly crenulate; scattered pellucid lenticelled. Pedicel 0.2 cm long, glabrous. Floral bract linear, boat-shaped, 0.5 by 0.1 cm, acute, glabrous. Ovary falcate-claviform, 0.25-0.3 by 0.15-0.2 cm, 1-winged and 5-ribbed, glabrous. Median sepal linear, curved, 1.2 by 0.3 cm, slightly hooded in apical part, otherwise boat-shaped, obtuse, 3-nerved at the base, 7-nerved on hood, finely papillate on outside near tip. Lateral sepals linear, ovate-triangular at the base, 0.45-0.5 cm long, acute. Petals linear, ovate-triangular at the base, 0.6-0.8 cm long, acute. Lip from a short tubular base abruptly curved downwards but blade not spreading, margins porrect, 1.2 by 0.5 cm, 3-nerved at the base, many-nerved near margin, margin fimbriate; glabrous. Capsule not seen. (After Van Royen, 1983).
Colours: Not recorded.
Habitat: Terrestrial in upper montane forest. Altitude 2710 m.
Flowering time in the wild: February.
Distribution: Malesia (New Guinea, endemic).
Distribution in New Guinea: Papua New Guinea. See map: 178-87M.JPG
Cultivation: Cool growing terrestrial.