Stems with internodes 1-15 cm. Petiole 1-4.5 cm; leaf blade asymmetric (at least slightly), elliptic to broadly ovate, 9-18 X 4.5-8 cm, glabrescent, abaxially often appressed puberulent along veins, margin subentire, apex acuminate; lateral veins 11-15(-17) on each side of midrib. Peduncle (4-)8-15 cm, glabrescent; bracts deciduous, red, ca. 1.2 X 1 cm. Calyx red; segments narrowly obovate to oblanceolate, ca. 10 X 2-4.5 mm, outside sparsely glandular puberulent, apex obtuse to rounded. Corolla white to pink, 3-4 cm, outside glabrous, 2.5-3.5 X 0.7-1 cm; adaxial lip lobes rounded, 5-6 mm; abaxial lip ca. 1 cm, lobes suborbicular, ca. 5 mm. Adaxial stamens 8-10 mm, abaxial ones 0.9-1.3 cm; staminode ca. 2 mm. Pistil ca. 1.5 cm, sparsely puberulent near apex, glabrous basally. Capsule 6-7 cm. Seed appendages ca. 0.2 mm. Fl. Jun-Oct, fr. Oct-Feb.
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