Herbs perennial. Stems ca. 1 m tall, basally branched, sparsely pubescent, apically densely pubescent. Leaves sessile or shortly petiolate; leaf blade oblong-lanceolate or lanceolate, 3--10 × 2--4 cm, marginal veins conspicuous, ciliate, abaxially densely pubescent, adaxially sparsely pubescent, base rounded, apex long acuminate. Flowers in broad cymes, densely glandular pubescent; bracts narrowly lanceolate, densely pubescent and ciliate, apex acute. Pedicel 0.5--1.2 cm, slender, densely glandular pubescent. Sepals 5, lanceolate, ca. 5 mm, outside glandular pubescent, midvein conspicuous, margin membranous, apex acute. Petals 5, slightly shorter than or subequaling sepals, 2-cleft. Stamens 5, alternating with petals, subequaling petals. Styles 3. Capsule 6-valved. Seeds 2 or 3. Fl. Aug--Sep, fr. Sep--Oct.
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