Terrestrial or epiphytic herb, about 5-20 cm tall, to 50 cm long. Stem sappy, creeping, hirsute. Leaves equal or subequal in a pair; petiole 0.5-7 cm long, hirsute; blade chartaceous when dry, elliptic, 2-13(-15) x 1.3-9(-10) cm, margin crenate-serrate, apex acute or obtuse, base rounded or subcordate, above and below hirsute. Flowers 1-3 in fascicles; peduncle up to 0.5 cm long, hirsute; pedicel 1-4 cm long, hirsute. Calyx green, lobes nearly free, subequal, lanceolate, slightly narrowed towards base, (0.7-)0.9-1.3(-1.5) x 0.2-0.4 cm, margin serrate near apex, apex acute, outside and inside hirsute; corolla oblique in calyx, scarlet, 3.5-4 cm long, tube trumpet-shaped, 3-3.5 cm long, base spurred, 0.3-0.4 cm wide, middle slightly and gradually curved, not ventricose, throat not contracted, slightly widened, 0.5-0.8 cm wide, outside hirsute, inside with a ring of glandular hairs in throat, limb 1.5-2.5 cm wide, lobes subequal, spreading, ventral lobe oblique, suborbicular, 0.5-1 x 0.5-1 cm, margin serrulate; stamens included, inserted on base of corolla tube; ovary ovoid, 0.4-0.5 x 0.25-0.3 cm, hirsute, style ca. 1 cm long, glabrous, stigma capitate. Mature capsule globose, 1 x 1 cm.
Guyana, Republic of: present Rio Branco: present Southern America:, Brazil North (Amazonas ‒ present); Brazil Southeast (Minas Gerais ‒ present); Colombia (Colombia ‒ present); Peru (Peru ‒ present); Venezuela (Venezuela ‒ present)
Colombia, Peru, Venezuela, Guyana, and Brazil (Amazonas, Rio Branco, and Minas Gerais); 90 collections studied (GU: 3).