Herbs, erect to spreading, annual, 1-5(-10) dm, tomen-tose to floccose or glabrous, usually grayish. Stems: caudex absent; aerial flowering stems erect, striated, angled, solid, not fistulose, 0.5-1 dm, to-mentose to floccose. Leaves basal and cauline; basal: petiole 0.5-3 cm, mostly floccose, blade oblanceolate to oblong-lanceolate, 1-4(-4.5) × (0.2-)0.5-1(-1.3) cm, tomentose abaxially, floccose or glabrate and grayish or greenish adaxially, margins crenulate; cauline sessile, blade lanceolate to oblong, 0.5-2 × 0.3-0.8 cm, similar to basal blade. Inflorescences cymose, open, 5-80 × 10-60 cm; branches striated, angled, sparsely tomentose to glabrate; bracts 3, scalelike, 1-3 × 1-3 mm. Peduncles erect, straight, slender, 1-2 cm, sparsely tomentose to glabrous. Involucres turbinate-campanulate to campanulate, 1.5-2.5(-3) × 1.5-2.5(-3), sparsely puberulent; teeth 5, erect, 0.3-0.6 mm. Flowers 1.5-1.8 mm; perianth white to rose, without a conspicuous rose-purple spot on each outer tepal, minutely glandular-puberulent; tepals dimorphic, those of outer whorl elliptic to obovate, sometimes inflated proximally, those of inner whorl narrowly spatulate; stamens exserted, 2-3 mm; filaments pilose proximally. Achenes light brown to brown, 3-gonous, 1-1.5 mm, glabrous.
Home