POTENTILLA WHEELERI Wats. Proc. Am. Acad. II : 148. 1876.
The pubescence is quite densely silky, and the typical form is apparently without glands. The leaflets are obovate and crenate at the rounded summit, 1-1.5 cm. long. The petals are obcor date, slightly contracted at the base, and a little exceed the calyx. It has been collected in southern California, Arizona and
northern Mexico. A form connecting it with the next may be regarded as a variety or perhaps as a distinct species. It may be known for the present as