Growth form Epiphyte, erect, branched, up to 20 cm high. Rhizome 1-2 mm in diameter. Roots filiform, long, flexible, glabrous. Stem cylindrical, compressed, proliferously leafed, completely covered by leaf sheaths, internodes 0.6-1.9 cm long. Leaf ovate, patent, coriaceous, glabrous, midrib grooved above, bordered by a narrow ridge on either side, strongly prominent below, margin thin, irregularly erose; apex subacute; base narrowed; lamina 1.4-2.8 cm long, 0.35-0.7 cm wide; sheath tubular, obovoid, compressed, ribbed, scattered warty, punctate, 0.5-0.9 cm long; apex without tooth, with glabrous margin. Inflorescences terminal, 8-flowered, erect, when young enveloped by a spathe. Spathe elliptic-naviculate, 7-nerved, apex obtuse, 0.8 cm long, 0.5 cm wide; floral bracts thin, transparent, elliptic-ovate, 7-nerved, apex obtuse, 0.8 cm long, 0.3 cm wide. Flowers upright, glabrous. Median sepal subobliquely broadly oblong-ovate, 3-nerved, with few warts at tip only, otherwise glabrous, apex obtuse, 0.55 cm long, 0.3 cm wide. Lateral sepals obliquely ovate-triangular, front margins connate up to 3/4 , 3-nerved, midrib crested at tip and surpassing sepal, with few scattered warts at tip only, 0.8 cm long, 0.5 cm wide; mentum oblong-conoid, rounded, 0.4 cm long, 0.2 cm wide. Petal obliquely spathulate, glabrous, 3-nerved, apex obtuse, 0.45 cm long, 0.2 cm wide. Lip glabrous 0.6 cm long, 0.4 cm wide, free part ovate-triangular, 0.25 cm long, 0.2 cm wide, 5-nerved; epichile obtuse; hypochile spurred; spur oblong, compressed, apex obtuse, 0.4 cm long, 0.2 cm wide. Column 0.2 cm long, 0.25 cm wide; clinandrium denticulate; stelidia tooth-like, obtuse. Anther cucullate-kidney-shaped, 0.1 cm long, 0.12 cm wide, connective umbonate at base, retuse at either end; rostellum not seen; stigma not seen; pollinia pear-shaped, 0.08 cm long; viscidium not seen. Ovary cylindrical-trigonous, glabrous, 0.7 cm long. Capsule not seen.
Distribution – Indonesia and Papua New Guinea.
Habitat and Ecology - Epiphyte in upper montane forest of Lake Habbema. Altitude 3200 m. Flowering season not known.
2. The epithet albiviridis refers to the greenish white color of the flowers (albi- means white and –viridis means green in Latin).
3. Specimen observed: Brass 11010.