POTENTILLA DECURRENS (Wats.).
P. dissccia decurrens Wats. Proc. Am. Acad. 7: 557. 1873.
This species much resembles the preceding, especially the var. glaucophylla, but it is a more cespitose plant and has smaller and thicker leaves with prominent veins beneath. The leaflets are gener ally five and the lower often attached a little lower down and de current on the petioles, but this is not always the case by far. It is found in the higher moutains of Utah, Wyoming and Montana.
Potentilla Ranunculus Lange, Fl. Dan. pl. 296.1, from Greenland,
comes near to both the preceding, differing from both in the more deeply dissected leaves and scaly rootstock. The leaves resemble much those of P. dccurrens, but are perfectly digitate and much thinner. It seems to be a very rare plant.
Potentilla ranuuculoides Humb. 8L Bonp.; Nestl. Monog. Pot. 56, of Mexico, belongs also to this group, differing from the North American species by its large petals and very broad rounded leaf lets.