Herbs 10-20 cm tall. Stems 4-sided, erect or creeping, densely hirsute or tomentose, glabrescent. Petiole 1.5-9 cm or longer, densely hirsute or tomentose; leaf blade ovate, broadly ovate, broadly elliptic, or orbicular, 6-12.5(-16) × 4.5-11(-14) cm, papery to substiffly papery, both surfaces green or abaxially purplish red, abaxially puberulous, sometimes strigose, or veins spreading-hirsute, sometimes shortly setose, or sometimes glabrescent, adaxially sparsely strigose-hirsute or puberulous and strigose, secondary veins 3 or 4 on each side of midvein, base cordate, margin inconspicuous minutely repand and ciliate, apex broadly acute, acuminate, subround, or sometimes retuse. Inflorescences terminal, umbellate; peduncle 4-17 cm, hirsute, rarely glabrescent or glabrous. Pedicel 3-8 mm, furfuraceous. Hypanthium funnel-shaped, 5-6 mm, 4-sided, furfuraceous, sometimes long setose. Calyx lobes broadly ovate, ca. 1 mm, apex acute. Petals pink to purple, broadly obovate, 5-6 mm, slightly oblique, apex acute. Stamens subequal, longer stamens ca. 1.5 cm, shorter stamens ca. 1.1 cm; anther base 2-tuberculate or not; connective decurrent, forming a short spur. Ovary cup-shaped, apex with a membranous crown, crown margin 8-dentate. Capsule cup-shaped, 4-5 × 6-7 mm, crown 4-lobed and exserted from calyx; hypanthium 8-ribbed, furfuraceous. Fl. May-Aug, fr. Jul-Oct.
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