Growth form Epiphyte, 10-17 cm high. Rhizome 1-2 mm in diameter. Root filiform, up to 10 cm long, flexible, glabrous. Stem slender, rather thick, erect, proliferously leafed, internode 0.4-0.6 cm long. Leaf oblong to linear-lanceolate; apex oblique, unequally 2-lobed; lamina 1.5-3.8 cm long, 0.2-0.63 cm wide; sheath tight, tubular, warty; apex toothed, with bristled margin, bristles 0.9-1.2 mm long. Inflorescences terminal, 5-8-flowered, sub-globose, 1.4-1.9 cm in diameter, 7-9 cm long, when young enveloped by a spathe. Spathe not seen; floral bracts broadly ovate, apex subacute, striated, 0.63-0.84 cm long. Flower upright, glabrous, not fully opened, pedicel 0.42-0.63 cm long. Median sepal ovate, concave, apex subacute, 0.32 cm long. Lateral sepal broadly ovate, concave, apex subacute, base oblique; mentum saccate, oblong, obtuse, 0.42 cm long. Petal ovate, concave, 0.32 cm long; apex subacute. Lip deeply saccate at base, ovate-oblong, patent, 0.42 cm long, free part 0.16 cm long, 0.21 cm wide; epichile obtuse; hypochile, 5-keeled, the sides in the middle plicate-reflexed, spurred; spur broadly obtuse, 2 cm long, 1 cm wide. Column clavate, 0.26 cm long; apex curved inward; column foot present; clinandrium oblong, obtuse; stelidia not seen. Anther not seen; pollinia not seen; viscidium not seen. Ovary clavate, 3-ribbed. Capsule not seen.
Distribution – Indonesia, Papua New Guinea, Solomon Islands, Vanuatu.
Habitat and Ecology – Epiphyte in montane forests along for instance the Oriomo river. Altitude 0-2100 m. Flowering in April, July, September and December in the wild.
3. The epithet papuana refers to the location where the type specimen was found, Papua.
4. Specimen observed L 0061332 (Type); HBL 20050958