Porpax oligantha (Mansf.) Schuit., Y.P.Ng & H.A.Pedersen, Bot. J. Linn. Soc. 186: 200 (2018).
Homotypic Names:

Stolzia oligantha Mansf., Notizbl. Bot. Gart. Berlin-Dahlem 11: 1062 (1934).
A dwarf creeping epiphytic herb to 7 cm. high. Pseudobulbs approximate, obovate fusiform, apex obliquely placed, 1-1.2 cm. long, 0.4-0.9 cm. high, 1-2-leaved at apex. Leaves oblong-ligulate or oblanceolate, 2.5-5 cm. long, 0.5-1.2 cm. wide, apex rounded, emarginate, with a small apiculum. Inflorescence l-2(? -3)-flowered; peduncle ± 0.6 cm. long; bracts lanceolate, 0.5 cm. long, acute. Flowers fleshy, yellowish green. Dorsal sepal oblong-obovate, 0.65 cm. long, 0.3 cm. wide, acute; lateral sepals obliquely lanceolate, 0.6 cm. long, 0.3 cm. wide, acute, adnate for basal /-¡, forming a saccate mentum with the column-foot. Petals lanceolate, 0.5 cm. long, 0.15 cm. wide, acute, keeled on outer surface especially towards apex. Lip oblong-ovate when spread out, curved, 0.3 cm. long, 0.2 cm. wide, acute, margins slightly erose, base with a fleshy oblong callus. Column truncate, very short; rostellum a broad flap; stigma broadly oblong; anther-cap hemispherical-compressed.
Epiphytic on mossy boughs of trees in mist forest; 1700-2000 m.
Tanzania (NW. Uluguru Mts.)
Flora of Tropical East Africa: Orchidaceae, Part 2
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