Terrestrial herb, 10-40 cm tall. Stem sappy, erect, decumbent at base, sericeous. Leaves subequal in a pair; petiole 0.3-11 cm long, sericeous; blade membranous when dry, oblanceolate, 15-25 x 4.5-9.5 cm, margin serrate, apex acuminate, base decurrent, above and below sericeous, purplish below. Flowers 1-8, in epedunculate fascicles; pedicel 1-2.5 cm long, sericeous. Calyx pinkish, lobes free, 4 erect, subequal, lanceolate, 1.9-2.5 x 1.1 cm, dorsal one slightly curved around spur and somewhat smaller, margin serrate, apex acuminate, outside sericeous, inside glabrous; corolla horizontal in calyx, white, ca. 4.5 cm long, tube tubular, 3.5-4 cm long, base spurred, 0.3 cm wide, middle cylindric, throat slightly contracted dorsiventrally, 1 cm wide, outside sericeous, inside with glandular trichomes dorsally, limb 2.5 cm wide, lobes subequal, spreading, rounded, 0.7-1.1 x 1.2-1.3 cm, margin ciliate; stamens included, inserted 0.8 cm from base of corolla; ovary ovoid, 0.4 x 0.3 cm, sericeous, style 3-3.5 cm long, pilose, stigma 2-lobed. Mature capsule ovoid, 0.4-0.5 x 0.3-0.4 cm.
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