Terrestrial subshrubs or shrubs; stems erect, to 2 m tall, the internodes slender, terete, densely hirsute, glabrescent, the nodes thickened; branches numerous. Leaves equal or usually somewhat unequal in a pair, apparently falling soon, leaving a bare stem a short distance below the apex; lanceolate to ovate, 2.6-12.4 cm long, 1.5-5.7 cm wide, membranous but appearing thick by the abundant strigose vestiture on both the surfaces, the apex acute to acuminate, the base acute or rounded, serrulate, above dark green, rarely scabrous, below lighter green; petioles to 2 cm long, densely pilose. Inflorescences in the upper leaf axils of 1-3 flowers; peduncles rare, when present to 1 cm long, pilose; bracts, when present, minute; pedicels slender, 8-16 mm long, densely pilose. Flowers with the floral tube campanulate, 3 mm long, 3 mm wide at the top, pilose; calyx lobes narrowly triangular, to 7 mm long, shortly connate at base, pilose, entire; corolla usually orange red, but varying from yellow to deep red outside, usually yellow within with orange stripes and/or spots, the tube not spurred, erect in the calyx, slightly ventricose above, 2.3-2.8 cm long, 3-5 mm wide at the base, becoming ca. 8 mm wide at the throat, the outside pilose, the inside glabrous, the limb lobes erect to porrect, semi-orbicular, ca. 3 mm long, 5 mm wide, toothed; stamens reaching the corolla limb, the filaments adnate to the base of the corolla tube for less than 1 mm, to 2.5 cm long, pilose at the base, glabrous above, the anthers with oblong locules, at anthesis coherent, becoming free; nectariferous ring glabrous; ovary apex conic, pilose, style ca. 2.0 cm long, the base sparsely pilose, glabrous above, the stigma stomatomorphic. Capsules ovoid, surrounded by the persistent sepals, ca. 1 cm long, 6 mm wide at the middle, pilose; seeds fusiform, a little less than 1 mm long, longitudinally striate, slightly twisted, tawny.
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