PIPER— FLORA OF THE STATE OF WASHINGTON. 337 



1. PotentiUa rivalis Nutt : Torr. & Gr. Fl. 1: 437. 1840. 



Type locality: "In alluvial soil along the Lewis River." Collected by Nuttall. 

 Range: Washington and Saskatchewan to Mexico. 

 Specimens examined: Almota, Pifer 2734. 

 Zonal distribution: Upper Sonoran. 



2. Potentilla monspeliensis L. Sp. PI. 1 : 499. 1753. 

 Potentilla hirsuta Michx. Fl. 1 : 303. 1803. 

 Potentilla norvegica American authors. 



Type locality: "Monspehi." 



Range: Labrador to Virginia and westward. Asia. 



Specimens examined: Latitude 49°, Lyall in 1858-9; Green River Hot Springs, Piper 

 441; Yelm Prairie, Piper 483; Segualiche Lake, Piper 442; Silverton, Bouck 51a; Marshall 

 Junction, Piper 2256. 



Zonal distribution: Transition and Canadian. 



3. Potentilla millegrana Engelm.; Lehm. Ind. Sem. Hort. Hamb. 1849: 11. 1849. 

 Potentilla leucocarpa Rydberg in Britt. & Br. 111. Fl. 2: 212. 1897. 



Type locality: America borealis. 



Range: Washington to Illinois, California, and New Mexico. 



Specimens examined: Tacoma, Flett 879, 68, 22; west Klickitat County, SuJcsdorf 1700; 

 Mission, Kreager 491 . 

 Zonal distribution: Arid Transition. 



4. Potentilla biennis Greene, Fl. Fran. 1: 65. 1891. 

 Potentilla lateriflora Rydberg, Bull. Torr. Club 23: 261. 1896. 



Type locality: California "in moist places in the mountains from Butte Co. to Kern 

 and San Luis Obispo." 



Range: British Columbia and Assiniboia to California and Arizona. 



Specimens examined: Tacoma, Flett 22, 68, 877; Clealum, Henderson, August, 1892; 

 Wenache, Whited 76, 1077; Ellensburg, Whited458; Elmer 381; Piper, May, 1897; Pasco, 

 Hindshaw 42; Crab and Wilson creeks, Sandberg cfc Leiberg 279; Almota, Lake & Hull 521; 

 Piper 1847; without locality, Vasey 313; Meyers Falls, Kreager 501. 



Zonal distribution: Arid Transition. 



6. Potentilla dissecta Pursh, Fl. 1: 355. 1814. 



Potentilla diversifolia Lehm. Nov. Stirp. Pug. 2: 9. 1830. 



Type locality: "Near Hudson's Bay." 



Range: British Columbia and Saskatchewan to California and Colorado. 



Specimens examined: Goat Mountains, Allen 121, 251; Cascade Mountains to Fort 

 Colville, latitude 49°, Lyall in 1860; without locality, Vasey; Wenache Creek, Cotton 1650, 

 1232. 



6a. Potentilla dissecta glaucophylla (Lehm.) S. Wats. Proc. Am. Acad. 8: 556. 1873. 

 Potentilla diversifolia glaucophylla Lehm. Rev. Pot. 73. 1856. 

 Type locality: Black Hills. Collected by Nuttall. 

 Range: California to Colorado and northward. 

 Specimens examined: Mount Rainier, Piper 1998. 



6. Potentilla permoUis Rydberg, Bull. Torr. Club 28: 175. 1901. 



Type locality: Endicott, Whitman County, Washington. Collected by Elmer. 



Range: Eastern Washington. 



Specimens examined: Crab and Wilson creeks, Sandberg cfc Leiberg 315; Endicott 

 Elmer 1830; without locality, Vasey in 1889. 



Zonal distribution: Arid Transition. 

 29418—06 M 22 



