Spring cinquefoil

Flower: Corolla regular (actinomorphic), bright yellow, 10–15 mm (0.4–0.6 in.) broad; petals five, 6–10 mm (0.25–0.4 in.) long, longer than sepals. Calyx 5-lobed, with epicalyx, epicalyx’s lobes short, broad. Stamens 10–30. Gynoecium separate, pistils many. Flowers solitary or a quite sparse corymb.
Leaves: Basal leaves as rosette, long-stalked, stem alternate, short-stalked–stalkless, stipulate. Leaflets 5 on basal leaves, 3 on stem leaves. Leaflets obovate, with toothed margins only at tips, glabrous on top, shiny, dark green, underside hairy, hairs solitary. Stipules linear with tapered tips.
Fruit: Receptacle bears many shallow-tipped achenes.