Growth form Epiphyte, up to 34 cm high. Rhizome not seen. Roots filiform, flexible, glabrous. Stem long, pendulous, laterally compressed, flexuose, proliferously leafed, completely covered by leaf sheaths, internodes 1.1-1.5 cm long. Leaf narrowly ovate-lanceolate, patent, gradually narrowed towards apex, longitudinally grooved, when dried black-punctate, carnose; apex strongly obliquely narrowly obtuse; base shortly narrowed, conduplicate, half-twisted; lamina 2.8-3.2 cm long, 0.67 cm wide; sheath tubular, compressed, flattened and having two edges, punctate; apex without tooth, with glabrous margin. Inflorescences terminal, few-flowered, capitate, when young enveloped by a spathe. Spathe broadly obovate, concave, punctate, 6-nerved, apex acute, conduplicate, 1.1 cm long, 1 cm wide; floral bracts transparent, thin, subovate, strongly concave, 3-nerved, apex narrowed, obtuse, 0.9 cm long. Flowers upright, glabrous, sepals and petals thin with silver spots. Median sepal ovate-oblong, apex obtuse, dorsally shortly obtusely apiculate, 3-nerved, 0.46-0.5 cm long, 0.23-0.25 cm wide. Lateral sepals shortly adnate to the base of the median sepals, decurrent on the column-foot, beyond the apex of column foot free from the lip but sub saccate-connate, obliquely ovate-triangular, slightly falcate, apex conduplicate-acuminate, obtuse, 4-nerved, 0.55 cm long, in front 0.84 cm long, whole synsepal at base 0.6 cm wide. Petal oblong-elliptic, sub obovate, apex obtuse, 3-nerved, 0.40.-0.45 cm long, 0.15-0.26 cm wide. Lip at base shortly adnate to the column, when flattened 0.5 cm long, blade recurved, triangular, obtusely angled, 5-nerved, 0.16 cm long, 0.28 cm wide; epichile obtuse, without brown glands; hypochile thickened in cross-ridge, spurred; spur oblong, back wall for c. two-thirds of basal part consisting of column foot, apex free, obtuse, 0.33-0.35 cm long, 0.15 cm wide. Column 0.18 cm long, glabrous, at base adnate to the lip, apex broadly obtuse; clinandrium one-lobes, obtuse; stelidia obtuse. Anther not seen; pollinia not seen; stigma with lower margin strongly elongated, concave; viscidium not seen. Ovary cylindrical, glabrous, with brown dots, 0.65-0.7 cm long. Capsule not seen.
Distribution – Indonesia.
Habitat and Ecology - Epiphyte in upper montane forest. Altitude 3000 m. Flowering in February in the wild.
Notes - 1. Flowers light green with a lip with a red tip.
2. The epithet rubroviridis refers to the color of the flower: green with red.
3. Specimen observed: Pulle 1055.