Potentilla Genus  cinquefoil Rosaceae 

Potentilla simplex.JK Marlow.www.namethatplant.net

Potentilla simplex.©JK Marlow.www.namethatplant.net.

Potentilla is a genus of herbs, sometimes small shrubs; stipules present. 

Leaves alternate, compound, often with 5 leaflets. 

Flowers yellow to white, radially symmetrical, mostly with 5 petals and 5 sepals (sometimes 4), sepals alternating with many small green bracts; stamens usually numerous (20); pistils 10-numerous, ovule one; floral parts attached to the saucer-shaped or round expanded base of the flower (hypanthium). 

Potentilla recta. fruit and seeds.Ken Chamberlain, The Ohio State University, invasive.org.Bugwood.org

Potentilla recta. fruit and seeds.Ken Chamberlain, The Ohio State University, invasive.org.Bugwood.org (Accessed 3/2015).

Fruit dry, a head of seed-like fruit (achenes).