POTENTILLA CANADENSIS L. Sp: P1. 498. 1753.
It is a very variable plant, and several species have been pro posed. What I take as the original P. Canacicusis is a. less luxu riant form of what has generally been known as P. Callaa'ensis sim plex (Michx.) T. & G. (P. simplex Michx.), not that small, simple, more hairy form, only a few inches high, that grows in poor dry soil, which is