Stems with internodes 1-8 cm. Petiole 0.7-5.5 cm; leaf blade asymmetric (at least slightly), elliptic to broadly ovate, 6.5-22 X 3.2-9.5 cm, puberulent to densely so, margin subentire to shallowly serrulate, apex acute to acuminate; lateral veins 8-14 on each side of midrib. Peduncle 1.2-2.2 cm, densely puberulent; bracts deciduous, red, ca. 1.2 X 1 cm. Calyx red; segments obovate, 1-1.2 cm X 4.5-6 mm, outside glabres-cent, apex acute to rounded. Corolla white, 4.5-5.8 cm, outside glabrescent, 3.5-4.5 X 1.5-1.7 cm; lobes suborbicular, ca. 7 mm. Adaxial stamens ca. 1.5 cm, abaxial ones ca. 1.8 cm; staminode ca. 0.6 mm. Pistil ca. 2.5 cm, glabrescent. Capsule 5.5-8 cm. Seed appendages 0.1-0.2 mm. Fl. Aug, fr. Sep.
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