Bulbophyllum longilabre Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912) 714
Type: Schlechter 17157 (holo B, lost); para: 17971; 19029 (B, lost)
Epiphyte, very small, to 10 cm high. Rhizome short, creeping. Roots filiform, elongated, flexuose, glabrous. Pseudobulbs ovoid, obtuse, 4-angled, 1-1.5 by 0.6-1 cm below the middle; 1-leaved. Leaves erect, ligulate, obtuse, with a minute apicule, glabrous, chartaceous, 3.5-7 by 0.8-1 cm near the middle; base subpetiolate-narrowed. Inflorescence 1-flowered, basal, erect or suberect, filiform, 2.5-3.5 cm long, with few, very small peduncle-scales. Floral bracts clasping, elliptic, apiculate, much shorter than the very slender pedicellate ovary. Flower erect or suberect. Sepals reflexed, obtuse, glabrous, linear with lanceolate base, c. 2.5 cm long. Lateral sepals oblique. Petals ascending, oblong-falcate, obtuse, glabrous, 0.35 cm long. Lip distinctly exceeding the sepals, tongue-shaped, linear-convex, obtuse, glabrous, 3 cm long; above with a longitudinal keel; below hollow. Column slender, curved; stelidia decurved, wing-like, obtuse, 3-lobulate; column-foot almost absent. Anther oblongoid-quadrangular, cucullate, obtuse, umbonate, glabrous. Pedicel and ovary very slender, glabrous, c. 2.8 cm long. (After Schlechter, 1911-1914)
Colours: Flower white, sepals near the base finely striped red. Petals red.
Habitat: Epiphyte in lower montane forest; 1000 m.
Flowering time in the wild: January, July, September, December.
Distribution: Malesia (New Guinea).
Distribution in New Guinea: Papua New Guinea; see map 96-1039M.jpg.
Cultivation: Intermediate growing epiphyte.