Herbs creeping and branched at base, ascending with 10--20 cm tall flowering stems, densely glandular hairy throughout. Leaves oblanceolate, 3--5 × 1--1.5 cm, both surfaces and margin densely glandular villous, base attenuate, apex acute or obtuse. Flowers 1--3. Pedicel 1--4 cm. Calyx cylindric-campanulate, membranous, saccate, 2--2.5 × 1--1.5 cm, densely violet glandular hairy; longitudinal veins violet or dark violet, cohering at apex, with violet glandular hairs; calyx teeth ovate-triangular, 3--4 mm, ciliate, apex obtuse. Androgynophore 2--5 mm, hairy. Petals exserted 6--9 mm beyond calyx, white or lilac; claws usually violet, narrowly cuneate, ca. 1.8 cm, ca. 6 mm wide at apex, auriculate, ± hairy at base; limbs suborbicular, 6--8 mm, deeply 4-lobed to middle; median lobes broad, shallowly 2-lobed; lateral lobes linear; coronal scales nearly cupuliform with small round teeth at apex. Stamens slightly exserted; filaments glabrous, sometimes sparsely villous at base. Styles included. Capsule ovoid, 1.3--1.7 cm, 10-toothed. Seeds flat, with broad wings, yellowish brown, orbicular-reniform, ca. 1.8 × 1.5 mm. Fl. Aug, fr. Aug--Sep.
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