AFRICAN

ORCHIDS

Disperis humblotii Rchb.f., Flora 68: 377 (1885).
Heterotypic Synonyms:

Disperis comorensis Schltr., Bot. Jahrb. Syst. 24: 429 (1897).
Description:

A slender glabrous, terrestrial herb, 10-22 cm tall. Leaves 2-3, alternate, set around the middle of the stem, lamina narrowly ovate to ovate, acute at the apex, cordate at the base, 2-4 × 1- 2 cm, the lower one long petiolate, petiole 4- 7 mm long, the upper leaf sessile. Inflorescence 2-10-flowered; bracts lanceolate or ovate, acute, generally shorter than the ovary, 5-8 mm long. Flower rose-coloured or white. Dorsal sepal narrow, one-nerved, forming an oblong hood with the petals, 6-7 × 2.5-3 mm. Lateral sepals narrowly ovate, 9-10 × 2.5-3 mm, slightly falcate, obtuse at the apex, adnate in the basal quarter to half their length, 3-4-nerved, bearing an obtuse conical spur, 0.6-0.7 mm long, in the basal third. Petals linear-ligulate, 6-7 mm long. Lip 2 mm long, basal part linear, united to the column; terminal part 3-lobed; the two lateral lobes slightly divergent, oblong, 1.2-1.5 mm long, rounded at the tips, concave on the inner face, outer face papillose-pubescent; mid-lobe stalked, fleshy, saddle-shaped, 1.5-2.8 mm long, obtuse at the tip, rounded and gibbous at the base, upper surface shortly papillose-pubescent, but the gibbous base is quite glabrous; stipe linear, glabrous, flat, 2 mm long, attached to the basal third to the terminal appendage Rostellar arms short, 0.8 mm long, spathulate at tips. stigma transverse, subreniform.
Habitat:

Under trees in humid forest at intermediate elevations; 700-1400 m.
Distribution:

Comoros, Madagascar