Herbs, erect, 2-5 dm, tomentose, greenish gray to gray. Stems: aerial flowering stems erect, (0.4-)0.8-1.5 dm, tomentose. Leaves basal; petiole 2-8 cm, tomentose; blade suborbiculate, 1-3 × 1-3 cm, white-tomentose abaxially, subglabrous and greenish adaxially. Inflorescences cymose, open, 10-40 × 10-40 cm; branches tomentose; bracts 1-5(-6) × 1-2 mm. Peduncles erect, straight, slender, 1-3.5 cm, tomentose. Involucres terminal at tips of slender branchlets at least proximally, not appressed to branches, turbinate, 2-2.5 × 1.5-2 mm, tomentose; teeth 5, erect, 0.6-0.9 mm. Flowers 1.5-2.5(-3) mm; perianth white, glabrous; tepals monomorphic, elliptic to oblong-obovate; stamens included, 0.7-1.2 mm; filaments usually pilose proximally; styles 0.1-0.3 mm. Achenes brownish, 3-gonous, 1.6-2(-2.5) mm; beak granular. 2n = 34.
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