Herbs, erect, 4-10 dm, glabrous, greenish to grayish. Stems: aerial flowering stems erect, 1-4 dm, glabrous. Leaves basal; petiole 1-6 cm, floccose; blade round to reniform, (0.5-)1-4 × (0.5-)1-4 cm, densely white-tomentose abaxially, floccose to glabrate and mostly greenish adaxially. Inflorescences cymose, occasionally distally uniparous due to suppression of secondary branches, open, 30-80 × 10-50 cm; branches straight, not inwardly curved distally, glabrous; bracts 1-3 × 1-3 mm. Peduncles absent. Involucres appressed to branches, cylindric-turbinate, (3.5-)4-5(-7) × 2.5-3 (3.5) mm, glabrous; teeth 5, erect, 0.2-0.4 mm. Flowers 1.5-3 mm; perianth white to pink, rarely pale yellow, glabrous; tepals monomorphic, oblong-obovate; stamens included, 1-1.5 mm; filaments pilose proximally. Achenes brown, 3-gonous, 2-2.5 mm, glabrous. 2n = 40.
Home