Herbs perennial. Sterile branches 2-4 cm. Flowering stems ascending, 5-12 cm, base usually prostrate. Basal leaves verticillate, deciduous on old stems; leaf blade acicular-spinose to linear, 0.8-2 cm, base spurred. Distal leaves alternate and persistent; leaf blade lanceolate, 8-10 × 2-3 mm, apex obtuse. Cyme simple or 2-branched, few flowered; bracts leaflike, 6-6.5 × 1-1.5 mm, spurred. Flowers sessile, unequally 5-merous. Sepals narrowly triangular to lanceolate, unequal, 2.5-4.3 × 0.8-1 mm, base connate and spurless, apex obtuse. Petals free, yellow, oblong-lanceolate, 4.5-5.3 × 1.2-1.5 mm, apex mucronate. Stamens 10; antesepalous ones 3.2-3.5 mm; antepetalous ones 2.4-2.6 mm, inserted ca. 0.6 mm from petal base; anthers yellowish. Nectar scales transversely oblong, ca. 0.4 × 0.7-0.9 mm, apex truncate to retuse. Carpels free, oblong-lanceolate, 3-3.5 mm; ovules many. Styles 0.8-1 mm. Follicles stellately divergent. Seeds subovoid, ca. 0.8 mm, longitudinally minutely papillate. Fl. Jul-Aug.
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