Perennial herb, rosulate, clump forming, 15–80 cm tall , many stemmed at base, with thick cylindrical taproot. Stems 4–28, thick, generally dichotomously branched in middle and upper parts, rarely throughout, leafless, striate, slender, glabrous, in the lower parts reddish and secretion spots prominent, surrounded at the base by dead and partly decayed leaf bases, which form a compact structure extending 1–4 cm below the soil surface. Leaves all basal and long-petiolate, 2–6 cm long; petiole slightly sulcate, enlarged at base; lamina rhomboid, 7–23 × 7–18 mm, undivided, cuneate at base, lower part entire, upper part with 8–20 spiny teeth , glabrous or puberulent. The lowest cauline leaf 2–4 cm including petiole, with lamina 10–15 × 4–6 mm; upper cauline leaves reduced to linear-lanceolate base of petiole, with membranous margin, 7–15 × 2–4 mm, glabrous. Umbel peduncle 2–7 cm long; rays 4–6, equal, 10–25 mm long; bracts and bracteoles absent. Pedicels 6–8 , subequal, pedicels of unpollinated flowers shorter, elongating during fruiting time. Flowers 6–8 , hermaphrodite, yellow. Sepals reduced. Petals yellow, oblong, c. 1 mm in diameter, incurved, glabrous, apex slightly ribbed. Anthers yellow. Stylopodium 0.8–1 mm, conical; both mericarps mostly well-developed. Mature fruit oblong-ovoid, 2–3 × 1–2 mm, glabrous, brownish, with lateral and dorsal ridges filiform and yellow. Flowering occurs in July–August, and fruiting in August–September.