Herbs perennial, pubescent throughout. Roots clustered, dark brown, cylindric. Stems diffusely branched, to 80 cm, apically glandular hairy. Leaves elliptic, 3--6 cm, 1.5--2 × as long as broad, both surfaces slightly tuberculate-scabrid or shortly pubescent, margin shortly ciliate, midvein prominent, base cuneate or attenuate into short petiole, apex acute. Dichasia large, the first internodes very long (often 5--10 cm), distally dense, densely glandular villous; flowers erect, 1--1.2 cm in diam. Pedicel of first flower subequaling or longer than calyx, pedicels of other flowers usually shorter than calyx; bracts ovate-lanceolate, herbaceous. Calyx campanulate, (6--)8--10 mm, densely glandular villous, base rounded, longitudinal veins violet; calyx teeth ovate-lanceolate, apex acute. Androgynophore 1--2 mm, glabrous, furrowed. Petals pale red, 1--2 cm, claws exserted 2--5 mm beyond calyx, oblanceolate, glabrous, auricles not prominent, limb bifid to ca. 1/2; lobes narrow, sometimes with 1 slender lateral tooth. Stamens and styles prominently exserted (2--3 mm); filaments glabrous. Capsule ovoid, 5--8 mm, shorter than calyx. Seeds dark brown to black, globose-reniform, ca. 1 mm. Fl. Jul--Aug, fr. Sep--Oct.
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