Subrhizomatous perennial; stems 1-4 dm tall; leaves mostly basal, oblanceolate to obovate, dentate towards apex, lightly tomentose or glabrate at maturity; stem leaves few and much reduced upwards; heads radiate, erect, several to many in a corymbose cyme; phyllaries narrow, in a single series; ray and disk flowers yellow; pappus of numerous white capillary bristles; achenes with small thin hairs. Flowers June to August.