Microcoelia nyungwensis L.Jonss., Symb. Bot. Upsal. 23: 117 (1981).
Epiphytic plant. Stem short, 10x2 mm. Scale-leaves acuminate to rostrate, with c. 5 nerves, up to 3.6 mm long. Roots few, slender, variously spreading to ± pendulous, loosely attached to the substrate, mostly branched distally, terete, smooth, up to 40 cm x l mm. Inflorescence(s) erect, spreading, up to 30 mm long, up to 7 simultaneously, usually ± dense, each with up to 7 flowers; peduncle short, up to 5 (- 10) mm long; rachis ± straight to indistinctly flexuose; bracts sheating, acute, 1-nerved, up to 1.8 mm long. Pedicel distinct, furrowed, up to 3.5 mm long; ovary straight, distinctly furrowed, up to 2.0x0.7 mm. Flowers ± horizontal, up to 11.5 mm long including ovary and pedicel, whitish. Glandular hairs densely covering the ovary, more scattered on the outer tepals; sparse on the inner tepals, pedicel, base of bracts and rachis. Dorsal sepal hooded, ovate to elliptic, acute, subapiculate, 3-nerved, 4.0-4.7 x 1.6 mm. Lateral sepals asymmetric, ovate, acute, apicu-late, slightly convex, 3-nerved, thickened along the mid-nerve, shortly connate at the base, 4.8-5.6 x 1.8-2.3 mm. Petals ovate, acute, apiculate, with one sparsely branched nerve, c. 3.9x1.6 mm. Labellum large, spathulate, faintly 3-lobed; mid-lobe broadly ovate, ± truncate, subapiculate, ± folded, with c. 7 main nerves with lateral branches; side-lobes narrowly oblong, ± parallel, with a smooth thickening on each side almost closing the spur mouth, 5.6-6.1 x 3.4-3.9 mm; spur long, slender, pendulous, slightly incurved to straight, apically ± obtusely inflated, up to 9.7 mm long (along curve up to c. 11.5 mm long). Column elongated, distinctly recurved, 1.6-1.7 long, 0.9-1.1 mm high; androclinium shallowly excavated, with a central thickening; rostellum lobes attached to the lower 1/3 of the length of the column, ± horizontal, thin, ligulate, connate for 1/2 the length, subacute, up to 1.0 mm long. Anther ± hemispherical, bivalvate dorsally, tapering into an oblong prolongation, apex rounded and recurved, 1.9-2.0 x 1.0-1.1 mm. Pollinia subglobose, asymmetric; in side view ± broadly elliptic, 500-550 x 470-480 µm; in median section broadly elliptic, up to 410 µm thick. Stipes ± curved, bifid for 1/3 to 1/2 of the total length, channelled, each branch ending into an elliptical cup-shaped apex, 1.6-1.7 mm long, up to 300 µm wide; viscidium curved, ovate, acute; at base truncate, distinctly notched, 0.6-0.7 x 0.2-0.3 mm, membranous.
Rain forest. Epiphytic on older branches.Altitude. 1950 m.
Recorded from the middle of the early rainy season.
As given for the genus.
WCSP (2017). 'World Checklist of Selected Plant Families. 03.03-2017; http://apps.kew.org/wcsp/
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