Dipodium brevilabium D. Metusala & P.O'Byrne, Orchid Rev. 117 (2009) 151, fig.
Type: D. Metusala RIO 52 (holo BO, spirit; iso PHBP)
Terrestrial and scrambling/climbing herbs. Terrestrial and scrambling phases unknown. Climbing phase monopodial, stems to 100 (or longer) by 1.2—1.5 cm (without sheaths), leafy in upper half; internodes 1.8—2 cm long. Leaves spreading, strap-shaped, 30—36 by 3.8—4.5 cm; leaf sheaths overlapping, erect. 4.8—6 cm long, persistent; apex acute; main nerves 3. Inflorescences erect. much longer than the leaves, 27—40 cm long; peduncle 10—15 by 0.5—0.6 cm; peduncle scales 2 or 3, triangular; rachis cylindrical, 17—25 cm long, with up to 35 laxly spaced flowers; floral bracts clasping the pedicel, ovate to triangular, 0.6—1 cm long, with acute to subacute apex. Pedicel and ovary 2.3—3.5 cm long; ovary broader than pedicel. Flowers medium size, 2.7—3.1 by 3.3—3.7 cm. Median sepal c. 2 by 0.9 cm, obovate; apex obtuse. Lateral sepals 1.9—2 by 0.8—0.9 cm, obliquely obovate; apex obtuse . Petals c. 1.9 by 0.8—0.9 cm, obliquely obovate; apex obtuse. Lip 3-lobed, when flattened 1—1.1 by 0.5—0.6 cm; hypochile shortly saccate, disc c. 0.7 cm long, with vestigial, erect, triangular lateral lobes along outer margin 0.1—0.2 cm long, along inner margin c. 0.06 cm long, with subacute apex, densely tomentose, basal callus 1, situated between the ridge bases, hemispherical, with 2 shallow longitudinal grooves, densely pubescent, with 2 parallel ridges laterally from the front of the callus, in front converging on the base of the epichile; epichile shallowly convex, 0.65—0.7 by 0.5—0.6 cm when flattened; base clawed, claw almost square, 0.2 cm long, blade broadly ovate to suborbicular, flanks with a sparse covering of evenly distributed short hairs, spine with a line of longer hairs leading to a dense 0.2 cm oval tuft of long hairs at the lip apex, its apex rounded, without nose. Column 0.5—0.6 cm abaxially, 0.7—0.8 cm adaxially, 0.4—0.45 cm wide across the apex; wing in the central part to the distal third of the column; stelidia small, pyramidal; basal cavity deep; mound ovate, prominent, covered in short hairs; rostellum small, not exceeding the stelidia; anther cucullate, c. 0.2 cm long, beak half as long as the body; pollinia ellipsoid, c. 0.1 cm; stipe V-shaped, c. 0.15 cm long, arms linear, 3 x longer than wide; viscidium transverse-oblong.
(after Methusala & O'Byrne 2009)