50:2 CONTRIBUTIONS PROM THE NATIONAL HERBARIUM. 



Range: Blue Mountains of Washington and Oregon, and adjacent Idaho. 



Specimens examined: Wenache Mountains, Whited 1162, 1254; Mount Stuart, Sandberg 

 (t Leiberg 549: Kamiak Butto, Piper ^dS: Elmer ^7: Blue Mountains, //orner 384; Piywr 

 in 1896; Douglas: Yakima County, Henderson, May 29, 1892; Mount Ad&ms, Henderson 

 August 9, 1892; Wenache Mountains, Cotton 129.5. 



Zonal distribution: Arid Transition. 



This species is exceedingU- variable as to color of the flower. While pale yellow is perhaps 

 the commonest tint, it varies from pink to dull red, lavender to violet, pale blue to dark blue 

 and to white. Occasionally all the.se color forms occur in <'los«^ proximity. 



19. Pentstemon gairdneri II(K)k. Fl. Bor. Am. 2: 99. 1838. 



Type ixx-auti': "Blue Mountains of N. W. America." Collected by Douglas. 



Range: Eastern Washington and ca.stern Oregon and Nevada. 



Specimens examined: Wenache Region, firam/^'f^fc 1()07; Wenache, ITAi/erf 1084; Egbert 

 Spr'mfffi, Sandberg (k T^iberg 355: Columbia River, latitude 46° to 49°, Lycdl; Simcoc Moun- 

 tains, Howell .344 and July, 188(); Cleveland, Suksdorf 413; upper Naches River, Hender- 

 son, .June 1.5, 1892; Cascade Mountains, Mrs. Steinweg in 1894; without locality, Howell 

 May, 1891. 



Zonal distribution: Upper Sonoran. 



19a. Pentstemon gairdneri hians Piper, Bull. Torr. Club 27: 396. 1900. 



Type l(x;ai.ity: Easleru Washington. Collected by G. R. Va.sey. 



Range: Eastern Wa.shington and eastern Oregon. 



Specimens examined: Wenache, Whited .36; Ellensburg, Pi/xr 2702; without locality, 

 Vasey in 1889; Wenache Mountains, Cotton 1294. 



Zonal distribution: Upper Sonoran. 



20. Pentstemon glandulosus Dougl.; Liiull. Bot. Reg. 16: /)/. 12G'2. 1829. 



Type locality: " In the Rm-ky Mts., Lat. 47° N. and at the base of the Blue Mts., on the 

 banks of the Kooskoaskee River." Collected by Douglas. 



Range: Interior of Washington and Oregon and adjacent Idaho. 



SPEcrMENs examined: Near Wenache, If7u7«i 30, 1082; Klickitat County, Howell, Juno, 

 1879; Yakima Valley, Brandegee 1008; Whitman County opposite Clarkston, Hunter; with- 

 out IcK-ality, Vasey in 1889; Simcoe Mountains, HovM, July, 1881. 



Zonal distribution: Upper Sonoran and Arid Transition. 



21. Pentstemon venustus Dougl.; Lindl. Bot. Reg. 16: pZ. 1300. 1&30. 



Type locality: "Gravelly channels of rivulets of the Blue Mountains and near the 

 source of the Walla Walla River." Collected l)y Douglas. 



Range: Blue Mountains and adjacent Idaho. 



Specimens examined: Blue Mountains, Lake & Hull 712; Piper, July, 1896; Asotin 

 Creek, //un<er 97; Waitsburg, //orner. m 



Zonal distribution: Arid Tran.sition. 



22. Pentstemon richardsonii Dougl.; Lindl. Bot. Reg. 13: pi. 1121. 1827. 



Type locality: "On bare dry rocks in the vicinity of the Columbia and its branches." 

 Collected by Lewis. 



Range: Oregon and Washington. 



Specimens examined: Ellensburg, Elmer 405; Whited ,572; Wenache, Whited in 1896, 

 1300; North Yakima, Piper, July 9, 1897; Egbert Springs, Sandberg & Leiberg 345; Ata- 

 num Springs, Watt, August, 1895; Rock Island, Sandberg dc Leiberg, July, 1893; Cape 

 Horn, Suksdorf 2319; Parker, Dunn, August 10, 1901 ; Kettle Falls, Watson 300; Columbia 

 River above the Chelan River, Wat,wn; Fresh Lake, McKay 12; Spokane County, Mrs. 

 Tucker; Spokane, Piper, July 26, 1896; Cascade Mountains, Mrs. Steinweg in 1894; with- 

 without locality, Cooper; Marcus, Kreager 464. 



Zonal distribution: Arid Transition and Upper Sonoran. 



