Growth form Epiphyte, up to 45 cm high. Rhizome ca. 1-2 mm in diameter. Roots filiform, flexible, glabrous. Stem elongated, much-branched, proliferously leafed, completely covered by leaf sheaths, internodes 1-1.5 cm long, Leaf lanceolate-linear, concave, wrinkled above, convex below, carnose; apex strongly obliquely obtuse, slightly 2-lobes; base contracted; lamina 3.7 cm long, 0.53 cm wide; sheath tubular, surpassing the internodes, in cross section elliptic, with densely transverse warts, 0.3 cm wide; apex without tooth, with glabrous margin. Inflorescences terminal, 5-flowered, nodding when young enveloped by a spathe. Spathe semi-elliptic, concave, broad at base, apex conduplicate-acuminate, dorsally puncate, 0.9 cm long, 0.9 cm wide; floral bracts smaller. Flowers upright, glabrous, 0.93 cm long, sepals and petals fused with recurved apex. Median sepal adnate to lateral sepals for 0.1 cm, apex acuminate, obtuse, 0.63 cm long, 0.4 cm wide. Lateral sepals deeply fused along the inner margin, broadly obliquely ovate-triangular, concave, 5-nerved, when flattened along the outer margin 0.6 cm long, to apex of the spur 0.7 cm long, free part 0.3 cm long, 0.4 cm wide, across the fused part 0.9 cm wide, apex acute or acuminate, apiculate; mentum saccate, enveloping spur of the lip, broad, rounded, forming acute angle with the ovary, dorsally broadly channeled, near apex convex 3-lobes, 0.35 cm long. Petal obliquely elliptic, acutely narrowed, apex narrowly obtuse, concave, 3-nerved, 0.6 cm long, 0.34-0.38 cm wide, front margin obtusely angular. Lip adnate to the column 0.1 cm and to the column foot, porrect, oblong-5-angled, carnose, 0.4 cm long; epichile obtusely angular, with small inconspicuous rib, with glands, 5-nerved; hypochile obtusely longitudinally channeled with convex sides, with conspicuous transverse, somewhat recurved crest, including the crest 0.25 cm long, 0.18 cm wide, spurred; spur forming acute angle with the ovary, laterally compressed, ovate-obliquely rounded, 0.4 cm long, 0.27 cm wide. Column curved, dorsally convex, 0.3 cm long, with column foot; column foot forming an acute angle with the ovary, 0.2 cm long; clinandrium deeply hollow, triangular, apex triangular separated from the stelidia broadly rounded, wavy, dentate sinuses; stelidia obliquely triangular, subquadrangular, narrowly obtuse. Anther cucullate, orbicular, 0.17 cm wide, apex hyaline-marginate, rounded, base retuse, connective at base obtuse conical-thickened; rostellum slightly surpassing the stelidia, broad, truncate; stigma prominent, semiorbicular, lower margin raised, rounded; pollinia 4, strongly dorsally compressed, obliquely obovate, outside convex, inside longitudinally grooved, 0.07 cm long ; viscidium not seen. Ovary sub fusiform, 3-grooved, 0.5 cm long . Capsule not seen.
Distribution – Indonesia.
Habitat and Ecology - Epiphyte in upper montane forest. Altitude 3000m. Flowering in February in the wild.
Notes - 1. Flowers white.
2. The epithet hubrechtiana refers to the location where the specimen was collected: Hubrecht mountain.
3. Specimen observed: K000810802 (isotype).