Herbs perennial. Roots fibrous. Sterile shoots 4-8 cm. Flowering stems branched at base, erect, 7-13 cm. Leaves 4-verticillate, sessile, broadly linear to oblanceolate-linear, 5-10 × 1-2 mm, base spurred, apex obtuse. Cyme 0.8-1.5 × 1.5-2.5 cm, few flowered; bracts resembling stem leaves. Flowers unequally 5-merous; pedicel 1-1.5 mm. Sepals broadly linear to oblanceolate, unequal, 3-6 × 1-1.4 mm, apex obtuse. Petals yellow, oblong-ovate, ca. 5 × 2 mm. Stamens 10; antesepalous ones ca. 3 mm; antepetalous ones ca. 2 mm, inserted slightly above petal base. Nectar scales oblong-cuneate, ca. 0.4 mm, apex subtruncate to emarginate. Carpels oblong, ca. 3 mm, base connate for 0.5-1 mm. Styles ca. 1 mm. Follicles divergent, many seeded. Seeds brown, lanceolate-oblong, ca. 1 mm, minutely mammillate. Fl. Apr-May, fr. May.
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