338 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



7. Potentnia fastigiata Nutt.; Torr. & Gr. Fl. 1: 440. 1840. 

 Type locwlitv; "Plains of the Rocky Mountains." 

 Range: Wasliington to Saskatcliewan, south to Cahfornia. 

 Specimens examined: Klickitat County, Svksdo)f24HS. 



8. Potentilla gracilis Dougl.; Hook. Bot. Mag. 57: pL 3984. 1830. 



Type locality: "On the banks of the Columbia and the plains of tlie Multnomah 

 rivers." Collected by Douglas. 



Range: Alaska to Oregon in the coast region. 



Specimens examined: Olympic Mountains, Fletf 108; Whidby Island, Gardner 97; 

 Coupeville, Gardner, July, 1898; Port Townsend, Edivards in 189G; T&comsi, Flett 900; 

 Olympia, Eincaid, July, 1896; Muckleshoot Prairie, Doctor Ruhn; Manor, Piper, July 

 14, 1899; Falcon Valley, Suksdotf 325; Fort Vancouver, Tolmie; Scouler; Piper 4937; 

 Cape Horn, Piper 5017. 



Zonal distribution: Humid Transition. 



9. Potentilla blaschkeana Turcz.; Lehm. in Otto, Gart. & Blum. 9: 506. 1853. 



Poterdilia fiahelliformis denophora Rydberg, Bull. Torr. Club 24: 7. 1897. 



Potentilla denophora Rydberg, Men. N. A. Pot. 75. 1898. 



Type locality: In the Russian American Colonies, California. 



Range: British Columbia to California and Wyoming. 



Specimens ex.4mined: Pullman, Piper 1529, 3534, 3535, 4134, 4135; Clarks Springs, 

 Kreager 21; Wenache, Wlvited 146, 1303; without locality, Va^ey iu 1889; Spokane 

 County, Mrs. Tucher. 



Zonal distribution: Arid Transition. 



10. Potentilla viridescens Rydl)erg, Mon. N. A. Pot. 69, 1898. 

 Type locality: "Manitoba." 



Range: Washington to Colorado and Manitoba. 



Specimens examined: North Yakima, Watt: Ellcnsburg, Piper 2736; Klickitat 

 Meadows, FZe<< 1326; Rattlesnake Mountains, Cotton 423; Fresh Lake, McKay 13; without 

 locality, Vasey in 1889; Wilson Creek, Lake & Hull 518; Toppenish, Cotton 781; Snipes 

 CvQek, Cotton 662; Blue Mountains, Piper 2445; Wenache Mountains, Co^/on 1646; Satus, 

 Co«on 1125. 



Zonal distribution: Upper Sonoran and Arid Transition. 



11. Potentilla nuttallii Lehm. Ind. Sem. Hort. Haml). 1852: 12. 1852. 

 Potenidla recta Nutt.-Gen. 1: 310. 1818, not L. 1753. 



Potentilla ngida Nutt. Journ. Acad. Phila. 7: 20. 1834, not Wail. 



Potentdla gracdis rigida S. Wats. Proc. Am. Acad. 8: 557. 1873. 



Type loc.\lity. "On the Mi.ssouii from Fort Mandan to the Rocky Mountains." 

 Collected by Nuttall. 



Range: British Columbia and Saskatchewan to California and Colorado. 



Speclmens examined: North Yakima, Watt, August, 1895; Pullman, Elmer 69; Piper 

 1877; witliout locality, Vasey 222. 



Zonal distribution: Arid Transition. 



12. Potentilla villosa Pall.; Pursh, Fl. 1: 353. 1814. 



Potentdla Jragijormis villosa Rcgel & Tiling, Fl. Ajan. Nov. Mem. Soc. Mosc. 1 1 : 85. 1859. 

 Type locality: "On the northwest coast." 

 Range: Alaska to Mount Rainier, Washington. 



Specimens examined: Olympic Mountains, Flett 129; Mount Rainier, Piper 1999: 

 Smith 783. 



Zonal distribution: Arctic. 



13. Potentilla flabellifolia Hook.; Ton. & Gr. Fl. 1: 442. 1838. 

 Potentdla gelida American authors, not Meyer. 



