Common Name: 
Cinquefoil

About 500 species of mostly perennial herbs (also annual and biennial forms) and shrubs.  Leaves alternate, compound (palmate and pinnate or trifoliate), leaflet margins often toothed.  Flowers usually saucer-shaped, 5 petals, yellow, white, and red.  Fruit nutlet-like, small, hard.  Native to the Northern Hemisphere
Potentilla: from the Latin potens, powerful, a reference to alleged medicinal properties of the plant.

Pronunciation: 
po-ten-TIL-a
Family: 
Rosacease