Bulbophyllum fibristectum J.J.Verm., Nordic J. Bot. 26 (2008) 156, fig. 16
Type: Jongejan cult. 3081 (holo L), from PNG, Lufa area
Roots sprouting mainly below the pseudobulbs. Rhizome 1-1.2 mm in diameter, sections between pseudobulbs 1-1.4 cm long, creeping downwards along the substrate, bracts persistent as long fibres thickly covering the rhizome and pseudobulbs. Pseudobulbs 0.3-2.1 by 0.4-1.1 cm, borne close together, more or less porrect, ellipsoid to ovoid. Leaves: petiole 0.2-0.4 cm long; blade 8.3-12 by 1.4-1.7 cm, index (length/width) 4.8-8.6, elliptic to ovate, acute. Inflorescence c. 1 cm long, 1-flowered; peduncle c. 0.18 cm long, porrect; non-floriferous bracts c. 2, the longest c. 1.6 mm long; floral bract c. 2.2 mm long, tubular, apiculate. Flowers little opening. Pedicel-with-ovary c. 3.5 mm long, basal node coinciding with the bract attachment. Dorsal sepal c. 5.5 by 2.2 mm, index c. 2.5, porrect, elliptic, acute, margins entire, base broadly attached, thick, adaxial surface finely papillose distally, abaxial surface glabrous. Lateral sepals c. 4.8 by 3.2 mm, index c. 1.5, fused along their lower margins, ovate, margins entire, surface finely papillose distally, otherwise as the dorsal sepal. Petals c. 2.8 by 1 mm, index c. 2.8, porrect, obovate-oblong, emarginate, margins finely papillose distally, rather broadly attached, rather thick and thicker distally, surface finely papillose distally. Lip c. 2.3 by 1.5 mm, index 1.5-1.6, recurved about half-way, general outline obovate, rounded, margins with one pair of retrorse, ovate, obtuse auricles close to the ligament, beyond these the lip margins increasingly coarsely papillose and with scattered long hairs, thick; adaxially deeply concave proximally, with a transverse ledge just above the base, with two rather high, obtuse ridges starting near the base, close to the margin and converging a little only at two thirds of the length of the lip, then diverging and grading into the distally convex lip surface, surface locally papillose proximally, densely papillose and with the papillae partly fused to irregular transverse bands and with scattered long hairs distally; abaxially widely convex and with a shallow median furrow, surface papillose and with scattered long hairs towards the margins. Column c. 1.5 mm long; stigma triangular, without keels inside, with a inconspicuous, rounded callus well below its proximal margin; foot hardly widened, with an angular transverse ridge just above the ligament; stelidia c. 1 mm long, upwards falcate, narrowly triangular, acute, with a slight, obtuse edge along the upper margin, with two similar edges along the lower; anther-cap abaxially with a large, dorsiventrally flattened crest overtopping the front margin, surface papillose, front margin not drawn out; pollinia 4, ovoid, the inner about as long as the outer, slightly more flattened; no appendages. (After Vermeulen, 2008)
Colours: Flower cream-coloured, lip yellow, with white hairs.
Distribution: Malesia (New Guinea).
Distribution in New Guinea: Papua New Guinea; Papua New Guinea; see map 96-2279M.jpg.