Herbs. Roots spinose. Stems branched proximally, often diffuse, violet, 10--15 cm, densely violet glandular pubescent in 1 line. Leaf blade narrowly lanceolate, 1--2 cm × 1--3 mm, both surfaces glabrous, midvein raised abaxially, base cuneate, apex obtuse or acute. Flower solitary, terminal, or cymes 2--5-flowered; rachis densely violet glandular pubescent; bracts ovate-lanceolate, midvein raised abaxially, base rounded, margin ciliate, apex obtuse. Pedicel 0.5--2 cm, densely violet glandular pubescent. Sepals 5, lanceolate, 4--5 × 1--2 mm, glandular pubescent abaxially, base broadened, apex obtuse. Petals 5, obovate, apex toothed. Stamens 10; anthers yellow. Ovary ovoid. Styles 2. Seeds flat, narrowly winged. Fl. Jul--Aug.
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