HOY CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Rance: Blue Mountains of Washington and Oregon, and adjacent Idaho. 
SPECIMENS EXAMINED: Wenache Mountains, Whited 1162, 1254; Mount Stuart, Sandberg 
& Leiberg 549; Kamiak Butte, Piper 3093; Elmer 807; Blue Mountains, Horner 384; Piper 
in 1896; Douglas; Yakima County, Henderson, May 29, 1892; Mount Adams, 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. 1838. 
TyPE Locatity: “Blue Mountains of N. W. America.”” Collected by Douglas. 
RANGE: Eastern Washington and eastern Oregon and Nevada. 
SPECIMENS EXAMINED: Wenache Region, Brandegee 1007; Wenache, Whited 1084; Egbert 
Springs, Sandberg & Leiberg 355; Columbia River, latitude 46° to 49°, Lyall; Simcoe Moun- 
tains, Howell 344 and July, 1880; Cleveland, Suksdorf 413; upper Naches River, Hender- 
son, June 15, 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. 
Tyre Locauity: Eastern Washington. Collected by G. R. Vasey. 
Rance: Eastern Washington and eastern Oregon. 
SPECIMENS EXAMINED: Wenache, Whited 36; Ellensburg, Piper 2702; without locality, 
‘asey in 1889; Wenache Mountains, Cotton 1294. 
ZONAL DISTRIBUTION: Upper Sonoran. 
— 
20. Pentstemon glandulosus Dougl.; Lindl. Bot. Reg. 15: pl. 1262. 1829. 
Type Locauity: “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. 
RanGeE: Interior of Washington and Oregon and adjacent Idaho. 
SPECIMENS EXAMINED: Near Wenache, Whited 30, 1082; Klickitat County, Howell, June, 
1879; Yakima Valley, Brandegee 1008; Whitman County opposite Clarkston, Hunter; with- 
out locality, Vasey in 1889; Simcoe Mountains, Howell, July, 18°. 
ZONAL DISTRIBUTION: Upper Sonoran and Arid Transitior 
21. Pentstemon venustus Dougl.; Lindl. Bot. Reg. 16: pl. 1309. 1830. 
Type Locaity: “Gravelly channels of rivulets of the Blue Mountains and near the 
source of the Walla Walla River.’’ Collected by Douglas. 
Rance: Blue Mountains and adjacent Idaho. 
SPECIMENS EXAMINED: Blue Mountains, Lake & Hull 712; Piper, July, 1896; Asotin 
Creek, Hunter 97; Waitsburg, Horner. 
ZONAL DISTRIBUTION: Arid Transition. 
22. Pentstemon richardsonii Dougl.; Lindl. Bot. Reg. 13: pl. 1127. 1827. 
Type Locatity: “On bare dry rocks in the vicinity of the Columbia and its branches.”’ 
Collected by Lewis. 
Rance: Oregon and Washington. 
SPECIMENS EXAMINED: Ellensburg, Elmer 405; Whited 572; Wenache, Whited in 1896, 
1306; North Yakima, Piper, July 9, 1897; Egbert Springs, Sandberg & Leiberg 345; Ata- 
num Springs, Watt, August, 1895; Rock Island, Sandberg & Leiberg, July, 1893; Cape 
Horn, Suksdorf 2319; Parker, Dunn, August 10,1901; Kettle Falls, Watson 300; Columbia 
River above the Chelan River, Watson; Fresh Lake, MeKay 12; Spokane County, Mrs. 
Tucker; Spokane, Piper, July 26, 1896; Cascade Mountains, Mrs. Steinweg in 1894; with- 
without locality, Cooper; Marcus, Kreager 464. 
ZONAL pistRiBUTION: Arid Transition and Upper Sonoran. 
