124 ROSALES 
1. Potentilla. 502. 
Flowers terminal, cymose. 
Leaves pinnate. 
Leaves white tomentose especially so beneath. 
Leaves glabrous above, stipules pectinately parted. 
Tomentose, leaflets cleft half way to the midrib, margins 
not revolute. 1. P. pennsylvanica. 
Pubescent with strigose hairs, leaflets deeper cleft, margins 
revolute. ja. P. penn. var. strigosa. 
Leaves silky above, stipules entire or nearly so. 2. P. hippiana. 
Leaves not white tomentose. 6. P. paradoxa. 
Leaves digitate, 3-5 foliate. 
Stamens 10-20. 
Plant erect, flowers 6-12 mm. broad. 3. P. monspeliensis. 
Plant decumbent or ascending, flowers about 4 mm. broad. 
5. P. millegrana. 
Stamens 5-8. 4. P. pentandra. 
Flowers solitary on axillary peduncles. 7. P. anserina. 
1. Potentilla pennsylvanica L. 
Rare in the western part of the state. Deuel County; Kennedy; 
Saunders County; Thedford. 
1a. Potentilla pennsylvanica var. strigosa Pursh. 
Common throughout the state. Dismal River; Sheridan County; Thed- 
ford. 
2. Potentilla hippiana Lehm. 
In the northwestern part of the state. Belmont; Ft. Robinson; Har- 
rison. 
3. Potentilla monspeliensis L. 
Common, probably over most of the state. Belmont; Cass County; 
Cherry County; Dakota County; Lincoln; Ponca; Walton; Whitman. 
4. Potentilla pentandra Engelm. 
Probably over most of the state. Aten; Chadron; Cherry County; 
Lincoln; Ft. Niobrara; Whitman. 
5. Potentilla millegrana Engelm. 
Potentilla leucocarpa Rydb. 
Throughout the state. Lincoln; Louisville; Newark. 
7. Potentilla paradoxa Nutt. 
Probably occurs over most of the state, but not common. Antelope 
County; Aten; Broken Bow; Cherry County; Lewellen; Lincoln; 
Omaha; Sioux County; Wood Lake. 
8. Potentilla anserina L. 
Angentina anserina (L.) Rydb. 
In the northwestern part of the state. Keith County; St. Paul; Scotts 
Bluff County. 
Potentilla bipinnatifida Dougl. and Potentilla platyloba Rydb. occur 
in Nebraska according to Rydberg’s Flora of Colorado. 
2. Drymocallis. 499. 
1. Drymocallis arguta (Pursh.) Rydb. 
Potentilla arguta Pursh. 
In low prairies and meadows throughout the state. Antelope County; 
