474 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



COLDENIA. 



1. Coldenia nuttallii Hook. Joum. Bot. & Kew Misc. 3: 296. 1851. 



Tigui/ia pam/oZta Nutt.; Hook. loc. cit. as synonym. 



Type locality: " Rocky Mountains." Collected by Nuttall. 

 * Range: Washington to Wyoming, Arizona, and California. 



Specimens e.xamined: Egbert Springs, Sandherg cfc Leiberg 343; Kennewick, Piper, 

 July 10, 1897; Pasco, Elmer 1061; Henderson, June, 1892; without locality, Brandegee 982. 



Zonal distribution: Upper Sonoran. 



LAPPXJLA. 



Annuals; soar of the nutlets linear. 



Lateral prickles of the fruit free 8.L. occidentals. 



Lateral prickles of the fruit united 9. L. cujndata. 



Perennials; scar of nutlets triangular or ovate. 



Lateral prickles united for about half their length. 



rt)rolla greenish, the lobes broadest at base 6. L. Mspida. 



Corolla blue, the lol)es narrowest at base 7. L. cUiata. 



Lateral prickles of the fruit free to the base or nearly so. 

 Swellings in throat of corolla pulx-scent. 



Flowers white ; pubescence, harsh, appressed 1. L. arida. 



Flowers l>lue ; pul)cscenc« soft, not appres-sed 2. L. saxatilis. 



Swellings in throat of corolla not pul)esccnt. 



Flowers white ; .swellings as long as broad 5. L. hendersoni. 



Flowers blue; .swellings broader than long. 



Corolla 4 to 6 mm. broad 3. 7^. fioribunda. 



Corolla 8 to 10 mm. broad 4. L. diffusa. 



1. Lapptila arida Piper, Bull. Torr. Club 28: 44. 1901. 

 Lappula coUoni Piper, Bull. Torr. Club 29: 549. 1902. 

 Type locality': Ellensburg, Wa.shington. 



Range: Washington and Oregon. 



Specimens examined: Wenache, Whited, June, 1896 and 1047; Ellensburg, iJZmcr 385; 

 Whited 324; Piper 2676; Peshastin, Sandherg cfc I^berg 595; Douglas County, Sj/Ulman, 

 May 27, 1896; junction Crab and Wilson creeks, Sandberg & Leiberg "271 ; Coulee City, 

 Pi/)cr 3840; without locality, Fasej/ in 1889; Chelan Butte, G^ri^i^ <fcCo<ton 173; Wenache 

 Mountains, Griffiths cfe Cotton 126; Rattlesnake Mountains, Cotton 360, 579, 650. 



Zonal distribution : Upper Sonoran. 



2. Lappula saxatilis Piper, Bull. Torr. Club 29: 541. 1902. 



Type locality: "Rocky sides of canons, Klickitat River, Wash." Collected by 

 Suksdorf. Not otherwise known. 



3. Lappula floribunda (Lehm.) Greene, Pittonia 2 : 182. 1891. 

 Echinospermum Jloribundum Lehm. Pug. 2: 24. 1830. 



Type locality: "Lake Pentanguishene to the Rocky Mountains," collected hy Drum- 

 mond, according to Hooker. 



Range: Washington to Saskatchewan, Colorado, and California. 

 Specimens examined: Yakima Region, Brandegee 986. 



4. Lappula diffusa (Lehm.) Greene, Pittonia 2: 182. 1891. 

 Echinospermum diffusum Lehm. Pug. 2 : 23. 1830. 



Type locality: "N. W. America," collected by Douglas, according to Hooker. 

 Range: British Columbia to California, Montana, and Utah. 



