Habenaria stenochila Lindl., J. Proc. Linn. Soc., Bot. 6: 139 (1862).
Platantheroides stenochila (Lindl.) Szlach., Richardiana 4: 108 (2004).
Habenella stenochila (Lindl.) Szlach. & Kras-Lap., Richardiana 6: 38 (2006).
No tubers, roots clustered, fleshy, thick. Stem up to 48 cm tall, erect, rather delicate, glabrous. Leaves 8-12, distributed along the stem length, petiolate. spread; petiole up to 2 cm long, rather wide; blade up to 15 cm long and 5.2 cm wide, oblong to oblanceolate, acute, succulent, pale to medium green with undulate margins. Inflorescence 5-9.5 cm long, up to 20-flowered, rather dense. Flowers medium sized, resupinate, tepals white, spur pale green at the apex. Floral bracts up to 25 mm long, oblong-ovate-lanceolate, acute, herbaceous, glabrous. Pedicel and ovary up to 20 mm long, glabrous; pedicel narrow, twisted; ovary slightly swollen. Dorsal sepal 9-9.5 mm long, 4.6-4.8 mm wide, broadly ovate, subapicu-late, cochleate, glabrous, with 3 branched nerves. Petals 6.5-9.5 mm long, 3.5-5 mm wide, broadly ovate, acute, densely ciliolate, with 3 branched nerves, broadly united with the gynostemium. Lateral sepals 9-11.5 mm long, 5.5-6 mm wide, obliquely and broadly ovate-lanceolate, acute, deeply cochleate with involute lower margin, glabrous, nerves branched. Lip 11-15 mm long, up to 2.8 mm wide, oblong, obtuse, ciliolate in the lower half; basal lobules tiny, triangular. Spur 30^5 mm long, 0.6-0.8 mm in diameter, filiform, upcurved, slightly swollen towards the apex or not. Gynostemium 4 mm long, connective rather narrow, subapiculate, rostellum the middle lobe shortly triangular, antherophores longer than stigmaphores.
Terrestrial or epiphyte on tree trunks, in forests, along rivers. Growing on rocks in undergrowth. Flowering from September to October.
Guinea, Príncipe to Chad