Usually densely tomentose, monocarpic perennial, chasmophyte. Stems up to 50 cm long, 1–4 mm in diameter, numerous, unbranched, sometimes with lateral branches, procumbent, flexuous, decumbent, arising from the collar of a thick taproot. Leaves tomentose, upper surface slightly tomentose, lower surface densely tomentose. Rosette leaves lyrate-shaped, pinnate with lobes petiolate or sessile, 4–21 cm × 0.6–5 cm , mostly withered at anthesis, crenate to dentate at margins; midvein mostly winged; terminal lobes cordate to ovate, obtuse to subacute at apex; lateral lobes spathulate, ovate, obovate, sometimes lyrate; lobes 3–15, unequal; petiole 1.2–8 cm. Cauline leaves 0.7–6 cm × 0.3–2.6 cm , sessile to 2 cm petiolate, decreasing upwards; lower cauline leaves similar to rosette leaves, lyrate; upper cauline leaves spathulate, ovate, obovate to eliptic, serrate to crenate-dentate at margin, acute at apex. Inflorescence racemose, rarely paniculate, 3–25-flowered per each stem. Flowers secund to subsecund; 1.5–8 mm pedicellate, rarely pedicels absent. Calyx lobes triangular-lanceolate to lanceolate, 7–13 × 3–5 mm, erect, tomentose, hirsute-tomentose at margins; appendages ovate to triangular, acute to obtuse, tomentose to hirsute, 3–5 × 2.5–3 mm, slightly concealing the ovary at flowering time, enlarged after anthesis and wholly concealing the ovary. Corolla campanulate, pubescent-tomentose to tomentose outside and inside, pale purplish-blue to whitish purplish-blue, 12–25 × 7–15 mm; lobes 2–5 × 2–7 mm, ovate-suborbicular, obtuse to subacute, with very small appendicules. Ovary very densely tomentose. Style included in or subexerted from the corolla tube, 9–18 mm, pale purplish-blue, mostly strongly curved downward. Stigma distinctly 5-lobed, slightly recurved, 1.5–3 mm. Stamen 7–12 mm long; filament white, 2–4 mm long, with triangular-orbicular base, base of filament 1.2–2 mm × 1.5–2 mm and ciliate on margin; anthers yellow, 5–8 mm long; pollen grain bright yellow, Pollen grain triporate, spheroidal, diameter 20.1 ±1.45 μm, spinulate, spinule length 0.2–0.7 μm . Capsule 3–6 × 2.5–5.5 mm, hemispherical to turbinate, tomentose, opening by 5 basal pores; usually hidden by enlarged calyx appendages. Seeds oblong-oval to oblong-elliptic, 0.4–0.7 × 0.2–0.3 mm, shining brownish, striate .
Flowering time:―May and June
Fruiting time:―June and August