500 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
7. Pentstemon acuminatus Dougl.; Lind]. Bot. Reg. 15: pl. 1285. 1829. 
Type LocaLity: “Sandy plains of the Columbia.’”’ Collected by Douglas. 
Rance: Washington to Saskatchewan and Texas. 
SPECIMENS EXAMINED: Sunnyside, Cotton 381; Egbert Springs, Sandberg & Leiberg, July, 
1893; Pasco, Piper 2985; Hindshaw 25; Henderson in 1892; Columbus, Suksdorf, June 10, 
1886: Moses Lake, Sandberg & Leiberg 376; Horse Heaven, Leckenby, May, 1898, Eltopia, 
Cotton 1023; Wallula, Cotton 1039. 
ZONAL DisTRIBUTION: Upper Sonoran. 
8. Pentstemon glaber Pursh, I'l. 738. 1814. 
Pentstemon speciosus Doug].; Lindl. Bot. Reg. 15: pl. 1270. 1829. 
Type Locauity: “Upper Louisiana.’ Collected by Bradbury. 
Rance: Washingten to California, Arizona, and the Dakotas. 
SPECIMENS EXAMINED: Wenache, Whited 29, 1111; North Yakima, Leckenby, May, 1898: 
Steinweg in 1894; Ellensburg, Piper 2672; Whited 429; Simcoe Valley, Lyall in 1860; Naches 
Valley, Lyall in 1860; near Bickleton, Suksdorf 414; Wilson Creek, Sandberg & Leiberg, 
June, 1893; Ritzville, Sandberg & Leiberg 185; Fresh Lake, McKay 27; Blue Mountains, 
Piper, July 15, 1896; Horner 385. 
ZONAL DISTRIBUTION: Upper Sonoran. 
9. Pentstemon erianthera Pursh, Fl. 737. 1814. 
Pentstemon cristatus Nutt. Gen. 2: 52. 1818. 
Pentstemon whitedii Piper, Bot. Gaz. 22: 490. 1901. 
Typr Locauity: “Upper Louisiana.” Collected by Bradbury. 
Rance: Washington to Nevada and the Dakotas. 
SPECIMENS EXAMINED: Wenache, Whited 131, 1112, 1068, 1257, 1166; Spokane, Levberg 
28; Dewart, May 20, 1901. 
ZONAL DISTRIBUTION: Arid Transition. 
10. Pentstemon deustus Dougl.; Lindl. Bot. Reg. 16: pl. 1318. 1830. 
Type tocatiry: “Northwest America on scorched rocky plains in the interior.’ Col- 
lected by Douglas. ‘ 
Ranae: British Columbia and Montana to eastern California. 
SPECIMENS EXAMINED: Wenache, Whited 95, 1083; Douglas County, Spillman, May 27, 
1896; Sprague, Sandberg & Leiberg 170; Blue Mountains, Piper in 1896; along Tukanon 
River, Lake & Hull, July 1, 1892; Wawawai, Lake & Hull 711; Piper 1891; Elmer 751. 
ZONAL pisTRiBUTION: Arid Transition and Upper Sonoran. 
11. Pentstemon variabilis Suksdorf, Deutsch. Bot. Monatss. 18: 158. 1900. 
Pentstemon paniculatus Howell, Fl. N. W. Am. 513. 1901. 
Typr Locauiry: “In Schluchten ostlich vom Klickitat-flusse,’’ Klickitat County, 
Washington. 
Rance: Klickitat County, Washington. 
SPECIMENS EXAMINED: Klickitat County, Suksdorf 417, 999; Howell in 1879; opposite 
The Dalles, Howell 162. 
12. Pentstemon pruinosus Dougl.; Lindl. Bot. Reg. 15: pl. 1280. 1829. 
Type Locatiry: “Near Priests Rapids of the Columbia,” Collected by Douglas. 
Rance: Central Washington. 
SPECIMENS EXAMINED: Near Wenache, Whited 1; Wenache region, Brandegee 1005; 
Wenache Mountains, Whited 1256, 1255; Ellensburg, Piper 2670; Douglas County, Spill- 
man, May 27, 1896; Coulee City, Piper 3859; Lakeside, Griffiths & Cotton, June 17, 1902. 
ZONAL DISTRIBUTION: Arid Transition. 
13. Pentstemon pinetorum Piper. 
Pentstemon ovatus pinetorum Piper, Fl. Palouse Reg. 158. 1901. 
Pentstemon veronicaefolius Greene, Leaflets 1: 167, 1906. 
