500 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



7. Pentstemon acuminatus Dougl.; Lindl. Bot. Reg. 16: ji. 1285. 1829. 

 Ttpe LOCAUT1-: "Sandy plains of the Columbia." Collected by Douglas. 

 Range: Washington to Saskatchewan and Texas. 



Specimens examined: Sunnyside, Cotton 381 ; Egbert Springs, Sandberg cfe Leiberg, July, 

 1893; Pasco, Piper 2985; Hindshaw 25: Henderson in 1892; Columbus, Suksdorf, June 10, 

 1886; Moses Lake, Sandberg cfe Leiberg 376; Horse Heaven, Leckenby, May, 1898; Eltopia, 

 Cotton 1023; Wallula, Cotton 1039. 



Zonal distribution : Upper Sonoran. 



8. Pentstemon glaber Pursh, Fl. 738. 1814. 



Pentstemon spedosus Dougl.; Liiidl. Bot. Reg. 16 : pZ. 1270. 1829. 



Type locality: "Upper Louisiana." Collected by Bradbury. 



Range: Washington to California, Arizona, and the Dakotas. 



Specimens ex/VMIned: Wenache, Whited29, 1111; North Yakima, Leckenby, May, 1898; 

 Steinweg in 1894; EUensburg, Piper 2672; Whiteil 429; Simcoe Valley, Lyall in 1860; Naches 

 Valley, LyaU in 1860; near Bickleton, Suksdorf 414; Wilson Creek, Sandberg <fe Leiberg, 

 June, 1893; Ritzville, Sandberg cfe Leiberg 185; Fresh Lake, McKay 27; Blue Mountains, 

 Piper, July 15, 1896; Homer 385. 



Zonal distribution: Upper Sonoran. 



9. Pentstemon erianthera Pursh, Fl. 737. 1814. 

 Pentstemon cristaius Nutt. Gen. 2: 52. 1818. 

 Pentstemon whitedii Piper, Bot. Gaz. 22: 490. 1901. 



Type locality: "Upper Louisiana." Collected by Bradbury. 

 Range: Washington to Nevada and the Dakotas. 



Specimens examined: Wenache, Whited 131, 1112, 1068, 1257, 1166; Spokane, Leiberg 

 28; DeumH, May 20, 1901. 



Zonal distribution: Arid Transition. 



10. Pentstemon deustus Dougl.; Lindl. Bot. Reg. 16: pi. l.ilS. 1830. 



Type ixx:ality: "Northwest America on scorched rocky plains in the interior." Col- 

 lected by Douglas. 



Range: British Columbia and Montana to eastern California. 



Specimens examined: Wenache, Whited 95, 1083; Douglas County, SpiUman, May 27, 

 1896; Sprague, Sandberg cfe Leiberg 170; Blue Mountains, Piper in 1896; along Tukanon 

 River, Lake cfe Hull, July 1, 1892; Wawawai, Lake tfe Hull 711; Piper 1891; Elmer 751. 



Zonal distribution: Arid Transition and Upper Sonoran. 



11. Pentstemon variabilis Suksdorf, Deutsch. Bot. Monatss. 18: 153. 1900. 

 Pentstemon paniculatus Howell, Fl. N. W. Am. 513. 1901. 



Type locality-: "In Schluchten ostlich vom Klickitat-flusse," Klickitat County, 

 Washington. 



Range: Klickitat County, Washington. 



Specimens examined: Klickitat County, Suksdorf 417, 999; Howell in 1879; opposite 

 The Dalles, HoweU 162. 



12. Pentstemon pruinosus Dougl.; Lindl. Bot. Reg. 16: pi. 1280. 1829. 

 Type locality: "Near Priests Rapids of the Columbia," Collected by Douglas. 

 Range: Central Washington. 



Specimens examined: Near Wenache, Whited 1; Wenache region, Brandegee 1005; 

 Wenache Mountains, Whited 1256, 1255; EUensburg, Piper 2670; Douglas County, Spill- 

 man, May 27, 1896; Coulee City, Piper 3859; Lakeside, Griffiths cfe 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. 



