Perennials, 3–30 cm. Stems lax. Leaves basal and cauline; basal (20–70 mm) 2-pinnately lobed (ultimate lobes linear to filiform, ca. 1 mm wide); cauline (5–18 mm) usually pinnately lobed, faces silky-tomentose. Heads 2–20 in corymbiform to paniculiform arrays or borne singly. Involucres 2.3–5.2 mm. Phyllaries 8–10, hairy. (Receptacles villous, hairs white, curly, 0.5–1 mm.) Cypselae 0.8–1.5 mm (faces obscurely nerved, becoming mucilaginous when wet).

Distribution

• Generated Map
• Legacy Map

w United States.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Lower Taxa

Sphaeromeria potentilloides var. nitrophila, Sphaeromeria potentilloides var. potentilloides

Key

1	Heads (3–)4–20; involucres 3–4(–4.5) mm; basal leaves 2-pinnately lobed	Sphaeromeria potentilloides var. potentilloides
1	Heads 1–3(–4); involucres 4–5.1 mm; basal leaves 1-pinnately lobed	Sphaeromeria potentilloides var. nitrophila