502 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 



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



Specimens examined: Wenache Mountains, Whited 1162, 12.54; Mount Stuart, Sandberg 

 dcLeiherg 549 \ Kamiak Butte, P;>/-3093; Elmer 807: Bkie Mountains, //o/7)er 384; Pip?- 

 in 1896; DougJas: Yakima County, Henderson, May 29, 1892; Mount kd&ms, Henderson 

 August 9, 1892; Wenache Mountains, Cotton 1295. 



Zonal distribution: Arid Transition. 



This species is exceedingly 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 these color forms occur in close proximity. 



19. Pentstemon gairdneri Hook. Fl. Bor. Am. 2: 99. 18.38. 



Type locality: "Blue Mountains of N. W. America." Collected by Douglas. 



Range: Eastern Washington and eastern Oregon and Nevada. 



Specimens examined: Wenache Region, firarKfe^ee 1007 ; Wenache, WM/erf 1084; Egbert 

 S^vmgs, Sandberg & Leiherg'ibo; Columbia River, latitude 46° to 49°, Lyall; Simcoe Moun- 

 tains, Hovell 344 and July, 1880; 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 Sonoraiu 



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



Type locality: Easleni Washington. Collected by G. R. Vasey. 



Rancje: Eastern Washington and eastern Oregon. 



Specimens examined: Wenache, Whited .36; Ellensburg, Piper 2702; without locality, 

 Vasey in 1889; Wenache Mountains, Cotton 1294. 



Zonal distribution: Upper Sonoran. 



20. Pentstemon glandulosus Dough; Lindl. Bot. Reg. 15: pi. 1262. 1829. 



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

 banks of the Kooskooskee River." Collected by Douglas. 



Range: Interior of Washington and Oregon and adjacent Idaho. 



Specimens examined: Near Wenache, Whited .30, 1082; Klickitat County, Hoivell, June, 

 1879; Yakim&V&Wey, Brandegee 1008; Whitman County opposite Claikston, /ZuTi^e/-; with- 

 out locality, Vasey in 1889; Simcoe Mountains, Hoivell, July, 1881. 



Zonal distribution: Upper Sonoran and Arid Transition. 



21. Pentstemon venustus Dough; Lindl. Bot. Reg. 16: pi. 1.309. 18.30. 



Type locality: "Gravell}' channels of rivulets of the l^luc Mnuiitains and near the 

 source of the Walla Walla River." Collected by Douglas. 



Range: Blue Mountains and adjacent Idaho. 



Specimens examined: Blue Mountains, Lake d; Hull 712; Piper, .hi]y, 1896; Asotin 

 Creek, Hunter 97; Waitsburg, Horner. 



Zonal distribution: Arid Transition. 



22. Pentstemon richardsonii Dough; Lindl. Bot. Reg. 13: pi. U21. 1827. 



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

 Collected by Lewis. 



Range: Oregon and Washington. 



Specimens exa.mined: Ellensburg, Elmer 40.5; Whited .572; Wenache, Whited in 1896, 

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

 num Springs, Watt, August, 189.5; Rock Island, Sandberg cfc Leiberg, July, 1893; Cape 

 Horn, Suksdorf 2:il9; Parker, Dunn, August 10, 1901 ; Kettle Falls, Watson 300; Columbia 

 River above the Chelan River, Watson; 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. 



