Plant with very slender to filiform stolons bearing several subcompressed, subglobose bladders ± 1·5-2.5 mm. diam. Lvs radical, deciduous, (5)-10-15-(25) mm. long, narrow, linear to spathulate. Scape slender, erect, ± 2-10 cm. long, 1-(2)-fld. Fls (5)-9-10 mm. diam.; bracts minute, ovate-triangular. Calyx-lobes oblong, obtuse. Corolla dark to very dark violet-purple, with yellow eye, very rarely whitish. Upper lip broadly cuneate, retuse; lower broad, almost semicircular; palate with yellow glandular line; spur short, obtuse. Capsule subglobose-obovoid.

Terrestrial herb; stolons very slender to filiform, bearing several subcompressed, subglobose bladders ± 1.5-2.5 mm diam. Lvs radical, deciduous, (5)-10-15-(25) mm long, narrow, linear to spathulate, entire. Scape slender, ± 2-10 cm long, erect, 1-(2)-flowered; bracts minute, ovate-triangular. Calyx-lobes broadly ovate-oblong, obtuse. Corolla bright to deep purple, with yellow eye, very rarely whitish; upper lip 2-3 mm diam., suborbicular, ± retuse; lower lip (5)-9-12 mm wide, usually broader than long, sometimes almost semicircular; palate with yellow mark towards base; spur c. 3 mm long, obtuse. Capsule 3-5 mm diam., subglobose-obovoid.