Stem erect, 40-115 cm tall, 4-6 mm in diam. at base, proximally glabrous, distally and synflorescence shortly yellow pilose. Basal leaves petiolate; petiole to 45 cm, glabrous, base sheathed, distally narrowly winged; leaf blade triangular-or ovate-cordate, (4.5-)6-14 × (3.5-)8-18 cm, glabrous, palmately veined, base cordate, margin regularly dentate, apex obtuse or acute; sinus ca. 1/3 as long as leaf blade; basal lobes slightly divergent, oblong, outer margin coarsely dentate. Middle stem leaves petiolate or sessile, small; petiole winged; sheath enlarged, tubular or leaflike, suborbicular, base sometimes auriculate, margin dentate; leaf blade ovate-triangular or triangular, to 9 × 11 cm. Distal stem leaves sessile, ovate or orbicular. Synflorescence racemose, 9-30 cm, lax; leaflike bracts ovate-lanceolate, proximal ones to 4 × 3 cm, smaller distally, margin dentate, apex acuminate; peduncles erect, 5-10 mm, slender, sometimes proximal ones to 8 cm. Capitula 10-25; supplementary bracts narrowly lanceolate, margin dentate. Involucre broadly campanulate, 9-11 × 5-9 mm, outside glabrous; phyllaries 8-10, in 2 rows, oblong, 2-4 mm wide, apex triangular-acute; inner phyllaries broadly brown membranous at margin. Ray florets yellow; lamina oblanceolate, 1.2-2 cm × 3-6 mm, apex obtuse; tube 5-6 mm. Tubular florets numerous, 1-1.1 cm; tube ca. 5 mm. Achenes brown, oblong, 5-6 mm. Pappus pale yellow, as long as tube of tubular corolla. Fl. Jul-Oct.
Home