372 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Astragalus arredus palousensis Jones, Contr. Western Bot. 10: 68. 1902. 

 Type locality: Kooskooskee [Clearwater] River, Idaho. Collected by Geyer. 

 Range: Eastern Washington, Eastern Orep;on, and adjacent Idaho. 

 Specimens examined: Pullman, Piper 1493; Elmer in 1896; without locality, Vasey 

 in 1889. 



Zonal msTuinuTioN: Arid Transition. 



19a. Phaca.arrecta leibergii (Jones). 



Astragalus arredus leibergii Jones, Contr. Western Bot. 10: (iS. 1902. 



Astragalus leibergii Jones, Proc. Cal. Acad. IT. 5: 663. 189.5. 



Type locality: "Egbert Springs," Douglas County, Washington. Collected by Sand- 

 berg & Leiberg. 



Range: Eastern Washington. 



Specimens examined: Egbert Springs, Samlherg & Leiberg 3.54. 



20. Phaca mortoni (Nutt.). 



Astragalus rywrtoni Nutt. Journ. Acad..Phila. 7: 19. 1834. 



Type locality: "About the sources and upper branches of the Missouri." Collected 

 by Nuttall. 



Range: Washington to Saskatchewan, Dakota, and Nevada. 



Specimens examined: Ellensburg, Whited; North Yakima, Henderson, May, 1892; 

 Fa«, August, 1895; Mrs. Steinweg m 1894; Simcoe Valley, Lya// in 1860; Egbert Springs, 

 Sandberg & Leiberg 341; Beaver Creek, Whited 22, 232; Wilson Creek, Lale & Hull 667; 

 Spokane, Henderson, July, 1892; Piper, June, 1897; Blue Mountains, Piper, July, 1896; 

 Almota, Piper 1864; without locality, Vasey in 1889: Clarks Springs, Kreager 79. 



Zonal distribution: Arid Transition and Upper Sonoran. 



21. Phaca adsurgens (Pall.). 



Astragalus adsurgens Pall. Astrag. 40.- pi. 3L 1800. 

 Astragalus adsurgens robnstior Hook. Fl. Bor. Am. 1: 149. 1830. 

 Astragalus nitidus Dough; Hook. loc. cit. as synonym. 

 Astragalus siriatus Nutt.; Torr. & Gr Fl. 1: 330. 1838. 



Type locality: "In regionem Trans-Baicalcnsibus, frequcns ad Selenguni, Ononem 

 circa Tarei-noor et usque in Mongoliae de-sertum." 



Range: British Columbia to Saskatchewan, south to Oregon and Kansas. Siberia. 

 Specimens examined: SWverhnke, Henderson 2359. 



22. Phaca agrestis (Dough). 



Astragalus agrestis Dough; Hook. Fl. Bor. Am. 1: 148. 1830. as synonym. 



Astragalus hijpoglottis of American authors. 



Type locality: "On the fertile plains of the Red River, and in the south, towards 

 Pembina." 



Range: Alaska to Hudson Bay, Nebraska, and Colorado. 



Specimens examined: Ophir, Elmer 422; Ellensburg, Whited 457; Coulee City, Piper 

 3872; Spilhnan, May, 1896; Sprague, Henderson 2361; Sandberg ck Leiberg 137; Spokane 

 County, Mrs. Susan Tuclcer, in 1892; Spangle, Piper, June, 1899; Crab Creek, Suksdorf 

 286; Loomis, Griffiths d- Cotton 344; Okanogan, Griffiths c(- Cotton 265. 



Zonal distribution: Arid Transition. 



23. Phaca reventa (A. Gray). 



Astragalus reventus A. Gray, Proc. Am. Acad. 15: 46. 1879. 



Type locality: "Interior of Oregon." Collected by Lyall. 



Range: Eastern Oregon and Eastern Washington. 



Specimens examined: North YiikmvA, Henderson in 1892; Mrs. Steinweg: Tamp\co,Hen- 

 dersonin 1892; Klickitat County, J. Hoirell, in 1878 and 1882, Cleinan Mountain, Hender- 

 son; Bishops, Piper 28S7; Wawawai, Elmer 795, 3059; Blue Mountains, Za/t-e cfc Hull 

 688; without locality, Vasey, in 1889. 



Zonal distribution: Arid Transition. 



