Microcoelia konduensis (De Wild.) Summerh., Bot. Mus. Leafl. 11: 154 (1943).
Homotypic Synonyms:
Angraecum konduense De Wild., Not. Pl. Util. Congo 1: 321 (1904).
Gussonea konduensis (De Wild.) Schltr., Beih. Bot. Centralbl. 36(2): 93 (1918).
Heterotypic Synonyms:
Dicranotaenia dahomeensis Finet, Bull. Soc. Bot. France 54(9): 47 (1907).
Gussonea dahomensis (Finet) Schltr., Beih. Bot. Centralbl. 36(2): 92 (1918).
Microcoelia dahomeensis (Finet) Summerh. in J.Hutchinson & J.M.Dalziel, Fl. W. Trop. Afr. 2: 454 (1936).
Stem short, in older specimens often stout and noticeably swollen at the joints with the inflorescences, up to 10(—50) x ( 1.5—)2—3 (-6) mm. Scale-leaves acuminate to rostrate, 5(—12) nerved, 3—5(—6) mm long. Roots many, mostly slender, predominantly very slender terminally, variously spreading, densely crowded, mostly variously twisted and usually with many braches, ± firmly attached to the substrate with terminal ends ± loose, terete, smooth, up to 50(—70) cm x 0.5-1.5 (-2.5) mm. Inflorescence(s) ± descending, spreading, up to 150(-200) mm long, up to 15(—25) simultaneously, usually ± dense, each with up to 15(—30) flowers; peduncle short, up to 10 mm long; rachis straight to indistinctly flexuose, stiff, ± terete, slightly furrowed; bracts sheathing, acute to subacuminate, basal bracts up to 5-nerved, apical bracts indistinctly 1-nerved, up to 2.5(—3.5) mm long. Pedicel short, ± curved and twisted, up to 2.3 mm long; ovary ± curved and twisted, (1.0-)1.3-2.0 x (0.3-)0.5-0.8 (-1.0) mm. Flowers mostly twisted into a ± horizontal position, up to 11(—15) mm long including ovary and pedicel, whitish; sepals tinged in orange-brown or salmon-coloured at the base and sometimes also into a central band; labellum white tinged with apple-green around the spur mouth; spur apex orange-brown to salmon-coloured as the anther and column. Glandular hairs ± densely covering the ovary, sparsely on the rachis, bracts, pedicel, base of tepals and spur. Dorsal sepal hooded, oblong to elliptic, acuminate, ± keeled apically, 3-nerved, (2.4—)3.1—5.3(—6.3) x 1.1—2.0 mm. Lateral sepals asymmetric, narrowly ovate to ovate, ± curved, convex, acute, ± apiculate, 3-nerved, (3.0-)4.0-6.6(-7.7) x (1.0-)1.3-2.3(-2.7) mm. Petals slightly asymmetric, narrowly ovate, acute, subapiculate, 1-nerved, sometimes branched, 2.2-6.1(-6.5) x (0.5-)0.8-1.6 (-2.1) mm. Labellum large, indistinctly 3-lobed; midlobe spathulate, ± folded, ± orbicular to broadly transversely elliptic, obtuse to slightly emargi-nate, apically ± erose, 5-nerved, lateral nerves with branches; side-lobes indistinct, narrowly oblong, irregularly thickened towards the spur mouth, (2.8-)4.5-7.91-10.3) x (1.4-)2.2-6.01-7.7) mm; spur distinctly incurved, obtuse, ± cylindrically inflated apically, 2.0-4.8 mm long, along the curve up to 13 mm long, apical inflation up to 2.0 mm in diameter. Column elongated, distinctly recurved, 1.0-2.3 (-3.2) mm long, (0.5-) 0.7-1.3 (-1.5) mm high; androdinium shallowly excavated with a minute hump in the centre; rostellum-lobes ± horizontal, in early anthesis ± pointing into the spur mouth, fleshy, ± narrowly wedge-shaped, up to 1.2 mm long. Anther ± hemispherical in side view, bivalvate dorsally, tapering into an oblong prolongation, apex subacute and ± incurved, (1.4-11.7-3.3 (—4.2) x (0.6—)0.9—1.1 mm. Pollinia subglobose, ± asymmetric; in side view ± elliptic, (500—) 530-690 (-780) x (410-)440-530 (-600) µm in median section obliquely oblong, the side attached to the stipes ± flattened, up to 400 pm thick. Stipes indistinctly sigmoid, bifid for c. 1/4 of the total length, channelled, each branch apically cup-shaped and ± ovate to ± circular in outline, 1.7—2.9(—3.6) mm long, each cup up to 0.5 mm wide (longest axis); viscidium small, narrowly elliptic, acute, truncate distally, ± curved, 0.6-1.1 x 0. 1-0.3 mm, membranous. Capsule ± ellipsoid to subglobose, 7-10x3-4 mm; pedicel short ± straight, 1.6-2.5 mm long. Seeds fusiform to bottle-shaped, testa cells narrowly elongate (in a dry state), with ± loopshaped and indistinctly club-shaped processes, anticlinal walls ± sulcate with finer striations, distinctly spirally sculptured, terminal ends indistinctly elongated, (320-)400-550 (-740) x (40-)50-70,µm. Scent sickly sweet, on the whole only fragmentarily recorded which could be indicative of a nocturnal periodicity.
Epiphyte in rain forest, also in plantations and secondary vegetation; on small branches and twigs in the crown of trees; 50-500 m; flowering April to June and September to December.
Flowering period:
Two flowering periods occur at each rainy season, mainly located at the beginning and end of the rains.
Described from such poorly preserved material that no details are available of many of the floral parts. It appears to be a relative of Microcoelia caespitosa (Rolfe) Summerh. but may be more correctly placed in section Dicranotaenia.
As given for the genus, hot growing epiphyte.
W. Trop. Africa to Uganda
A Monograph of the Genus Microcoelia [Orchidaceae] Jonsson 1981; WCSP (2017). 'World Checklist of Selected Plant Families. 03.03-2017;
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