Terrestrial herb. Rhizoids and stolons capillary, numerous, fasciculate from the base of the peduncle. Leaves numerous but usually decayed at anthesis, branch-opposed on the stolons, linear to narrowly oblanceolate, up to 10 cm. ×3 mm., 1–7-nerved. Traps scattered on the stolons and leaves, globose, shortly stalked, glandular, 0.6–1.5 mm. long; mouth basal, with 2 dorsal simple subulate appendages and a single, laterally compressed ventral appendage. Inflorescence erect or twining, 3–35 cm. high; peduncle filiform, glabrous; flowers 1–8, distant; scales few, similar to the bracts; bracts basifixed, ovate-deltoid, 1.5–2 mm. long, up to 5-nerved; bracteoles linear, shorter than the bract; pedicels erect, narrowly winged, as long as or longer than the fruiting calyx. Calyx lobes ovate, up to 5 mm. long at anthesis and 10 mm. long in fruit, more or less unequal, upper usually larger, with apex acute, obtuse or subacute, lower truncate or shortly bidentate. Corolla yellow, 8–20 mm. long; superior lip more or less twice as long as the upper calyx lobe, narrowly oblong to broadly spathulate with apex rounded, truncate or more or less emarginate; inferior lip more or less circular, with apex entire, bifid or obscurely 4-crenate; palate conspicuously raised, usually prominently longitudinally 4-ridged; spur subulate, acute, more or less as long as the inferior lip. Filaments linear, curved; anther-theacae subdistinct. Ovary ovoid, dorsiventrally compressed; style short; stigma inferior lip rounded, superior lip smaller. Capsule ovoid, up to 5 mm. long, dehiscing by a longitudinal ventral slit with thickened margins. Seeds numerous, ovoid, 0.6–0.8 mm. long, usually verrucose; testa rather loose and corky, the cells distinct, elongate.
