PIPER FLORA OF THE. STATE OF WASHINGTON. 339 



Type locality: "Summit of Mount Rainier, Oregon, Douglas." The specimen was 

 probably collected by Tolmie, as Douglas was never on Mount Rainier. 



Range: Alaska to Oregon in the mountains. 



Specimens examined: Clallam County, Elmer 2521; Cascade Mountains, latitude 49°, 

 Lyall in 1859; Mount Rainier, Piper 1996; Allen; Smith 396; Mount Adams, Henderson, 

 August, 1892; Suksdorf; Flett 1331; Stevens Pass, Sandberg <6 Leiberg, 717; Horseshoe 

 Basin, Lake cfc Hull 520; Bridge Creek, Elmer 648; without locality, Brandegee 744. 



Zonal distribution: Arctic. 



14. Potentilla cascadensis Rydberg, Mon. N. A. Pot. 109. 1898. 



Type locality: Chiquash Mountains, Washington. Collected by Suksdorf . 

 Range: Washington and Oregon in the Cascade Mountains. 



Specimens examined: Near Mount Adams, Flett; Chiquash Mountains, SuksdorJ 2165; 

 Olympic ^fountains, Elmer 2523. 



15. Potentilla drummondii Lehm. Nov. Stirp. Pug. 2: 9. 1830. 



Type locality: "Rocky Mountains north of the Smoking River, in lat. 56°, scarce. 

 Drummond " — according to Hooker. a Lehmann does not note the locality of his specimens 

 which however, were received from Hooker. 



Range: British Columbia and Alberta to California. 



Specimens examined: Mount Ad&ms, Suksdorf 5S9. 



16. Potentilla newberryi arenicola Rydbei^, Mon. N. A. Pot. 112. 1898. 

 Type locality: Wallula, Wash. Collected by Howell. 



Range: Eastern Washington and eastern Oregon. 

 Specimens examined: Wallula, Howell. 



HORKELIA. 



Filaments dilated; flowers white. 



Leaflets deeply dentate 1. H.fusca. 



Leaflets lobed nearly to the midrib lb. H.fusca tenelln. 



Filaments filiform; flowers yellow. 



Cymes rather loose; receptacle cup shallow 2. H. utahensis. 



Cymes subcapitate; receptacle cup deep 3. //. gordoni alpicola- 



1. HorkeHa fusca Lindl. Bot. Reg. 23: pi. 1997. 1837. 

 Potentilla douglasii Greene, Pittonia 1 : 103. 1887. 



Type locality: "In California." Collected by Douglas. 

 Range: Washington to California. 



Specimens examined: Mount Adams, Henderson in 1892; without locality, Vasey in 

 1889, August 7, 1882. 



lb. Horkelia fusca tenella S. Wats, in Brewer & Wats. Bot. Cal. 1: 181. 1876. 

 Horkelia tenella Rydberg, Bull. Torr. Club 25: 55. 1898. 

 Type locality: Sierra County, California. 

 Range: California to Washington. 

 Specimens examined: Klickitat River, Flett 1334. 



2. Horkelia utahensis (S. Wats.) Rydberg, Mon. N. A. Pot. 150. 1898. 

 Ivesia utahensis S. Wats. Proc. Am. Acad. 17: 371. 1882. 



Type locality: "Summit of Bald Mountain in the Wasatch range, above Alta, at over 

 12000 feet altitude," Utah. 



Range: Washington to California and Utah. 



Specimens examined: Cascade Mountains, Brandegee in 1883; Mount Stuart, Elmer; 

 without locality, Vasey in 1889. 



Zonal distribution: Arctic. 



oFl. Bor. Am. 1: 190. 1838. 



