Terrestrial herb, 15-40 cm tall. Stem sappy, creeping or ascending, puberulous at apex, glabrescent. Leaves equal or subequal in a pair; petiole 1-4.5 cm long, puberulous; blade membranous when dry, oblanceolate to elliptic, 5-19 x 2.5-7.5 cm, margin crenate-serrate, apex acuminate, base decurrent into petiole, above pubescent, below puberulous, especially on midrib and veins. Flowers 2-8, umbellate or subcymose; peduncle 0.5-1.5 cm long, puberulous; pedicel 1-3 cm long, puberulous to glabrous. Calyx green, lobes free, 4erect, dorsal lobe curved around spur, subequal, ovate or oblong-ovate, 1-1.6 x 0.5-0.7 cm, margin entire, apex acuminate, outside sparsely pubescent, inside minutely puberulous; corolla oblique in calyx, white (rose-white, acc. Archer 2321), 4-6 cm long, tube infundibuliform, 3-4.5 cm long, base spurred, 0.4-0.5 cm wide, middle slightly widened, hardly ventricose, throat barely contracted, 0.9-1.4 cm wide, outside pilose, inside with scattered minute 2-celled glandular hairs, limb 1.7-2.6 cm wide, lobes subequal, spreading, rounded, 0.4-0.6 x 0.4-0.6 cm, margin entire; stamens included, inserted on corolla 0.3-0.4 cm from base; ovary ovoid, 0.3-0.4 x 0.2-0.3 cm wide, hirsute, style 2.5-3 cm long, glabrous, stigma 2-lobed. Mature capsule globose, 1 x 1 cm.
Amaprá present, Guianas present, Southern America, Tobago present
Tobago, the Guianas, and Brazil (Amaprá); 100 collections studied (GU: 20; SU: 1; FG: 45).