POTENTILLA FRUTICOSA L. Sp. Pl. 495. 1753.
This is a native of the north temperate zone, extending in America from Labrador to Alaska south to New Jersey and Colo rado. In mountain regions the leaflets are narrower with revolute margins, and this form represents P. floribunda Pursh, P. fiwii
cosa ienuifolia Lehm. The extreme is reached by the form col lected by Watson during the King's expedition and described as P. finticosa pa•vifolia Wats. It has nearly linear leaflets and smaller long-pedicelled flowers.