Genus Bulbophyllum section Lasiogaster
Genus Bulbophyllum section Lasiogaster J.J. Verm., Schuit. & de Vogel, Males. Orchid J. 21 (2018) 59. Type species: Bulbophyllum lasiogaster J.J. Verm. & P. O’Byrne
Epiphytes. Rhizomes creeping, straggling or patent; new shoots usually developing from nodes below the pseudobulbs; scale leaves glabrous to colliculate. Roots spreading, glabrous to slightly and locally hirsute. Pseudobulbs 1-leaved, not fused to the rhizeome. Leaves rather thick, nerves inconspicuous. Inflorescences developing from nodes below the pseudobulbs and from nodes scattered along the rhizome, solitary to few in a fascicle, 1-flowered; peduncle scale leaves 2. Flowers per fascicle 1 open at a time; floral bracts tubular; basal node 1x the diameter of the pedicel above the attachment of the floral bract or more, longer than the ovary. Sepals free, c. equal, 0.75–1.1 cm long, (ovate-)triangular; margins entire; apex (sub-)acute; glabrous; 3-nerved. Petals 0.23–0.4 cm long, triangular to rhombiform; margins entire to slightly erose; upper surface and margins glabrous or densely glandular papillose; lower surface glabrous or slightly papillose; 1-nerved. Lip mobile on a thin ligament, undivided, 0.21–0.23 cm long, (ovate-)oblong (without spreading); margins entire, (glandular) papillose; above without keels; surface glabrous towards the base, further (glandular) papillose with antrorse papillae arranged in transverse rows; underside (partly) (glandular-)papillose. Column with the rostellum front well receding between the stelidia; column foot hardly tapering towards its apex, in front glabrous or with irregular transverse rows of glandular papillae; stigma in lateral view not protruding; stelidia c. 1/2 the length of the column with stelidia, distinct, triangular, with or without an inconspicuous wing along the lower margin; anther on underside with a low, rounded crest; in front with a slightly concave, rounded, thick beak; pollinia 4, with the inner ones c. as long as the outer ones; without appendages.
(after Vermeulen, Schuiteman & de Vogel 2018)