Herbs perennial, erect, with leafy basal soboles. Stems 25-150 cm tall, usually well-branched, strigillose on upper part, lacking any glandular hairs, with two faint strigillose lines decurrent from margins of petioles, or rarely subglabrous. Leaves subsessile or lower ones with petioles 1-6 mm; cauline blade oblong-lanceolate to narrowly ovate or rarely narrowly rhombic, 3-9.5 × 0.8-2.5 cm, margin sharply denticulate with 13-35 teeth per side. Inflorescence strigillose or very rarely subglabrous. Sepals 3.8-6 mm, sparsely and evenly strigillose or rarely subglabrous. Petals 4.5-7 mm. Fl. Jun-Sep, fr. Aug-Oct. 2n = 36.
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