522 " CONTRIBUTIONS FROM THE NATION.\L HERBARIUM. 



OROBANCHE. 

 Flowers pedicellate. 



Stems low, stout ; anthers woolly 1.0. comosa. 



Stems taller; anthers glabrous or hairy 2. 0. calif omica. 



Flowers subsessilc ; anthers glabrous or nearly so. 



Stems tuber-like at base, branched alnive 3. 0. jnnonim. 



Stems not tuber-like at l)ase, usually simple 4. 0. huloticiana. 



1. Orobanche comosa Hook. Fl. Bt>r. Am. 2: 92. 1838. 

 Aphyllon como!^im A. Gray, Bot. Cal. 1 : 584. 1876. 

 Phelipoea comom A. Gray, Pac. R. Rep. 12- : 54. 1860. 



Type locality: "Banks of the Columbia." Collected by Douglas, by Scx)uler, and by 

 Gairdner. 



Range: Washington to California. 



Specime.ns BXA.MINED: Whidby Island, (rordnCT- 358; Falcon Valley, tSui-.srfor/" 82; with- 

 out locality, Brandegee 1029; Roc^k Island, Sandberg cfc Leiberg 456; Chelan, Elmer 506; 

 Grand Coulee, Lake cfe Hull 778; Soap Lake, McKay 3; Squaw Creek, Cotton 876; Rattle- 

 snake Mountains, Cotton 764; Flat Top Island, Laurence 103; Sucia Island, Hett 2755. 



2iONAL distribution: Upper Sonoran and Transition. 



2. Orobanche californica Cham. & Schlecht. Linnaea 3: 134. 1828. 

 Aphyllon californica A. Gray, Bot. Cal. 1 : 584. 1876. 



Type locality: "E vicinia portus St. Francisco," California. 

 Ranoe: Washington to California and Nevada. 

 Specimens examined: Walla Walla region, Brandegee 1030. 



3. Orobanche pinonun Geyer; Hook. Kew. Joum. Bot. 3: 297. 1851. 

 Aphyllon pinetorum A. Gray, Bot. Cal. 1: 585. 1876. 



Type locality: "Top of high mountains near St. Joseph, Coeur d'Aleine country. 

 Growing on the roots of Abies balsamea," Idaho. Collected by Geyer. 



Range: Eastern Washington and Idaho. 



Specimens exa3«ned: Columbia Valley, latitude 46° to 49°, LyaU, June, 1860; lone, 

 Kreager 403. 



Zonal DisfTftiBunoN: Arid Transition. 



4. Orobanche ludoviciana Nutt. Gen. 2: 58. 1818. 

 Aphyllon ludovicianum A. Gray, Bot. Cal. 1 : 585. 1876. 



Type locality: "In sandy alluvial soils around Fort Mandan," North Dakota. 



Range: Washington to Saskatchewan, Texas, and California. 



Specimens examined: Rock Island, Sandberg cfc Leiberg 436; west Klickitat County, 

 Suksdorf 2248; Wawawai, Piper 2842; Lake Chelan, Gorman 720; Craigs Ferry, Cotton 

 1343; Granddalles, Westgate in 1905; "on* roots of Psoralea verrucosa in the light drift sand 

 desert at the mouth of Lewis and Walla Walla rivers," Geyer. • 



Zonal distribution: Upper Sonoran. 



BOSCHNIAKIA. 



1. Boschniakia strobilacea A. Gray, Pac. R. Rep. 4: 118. 1856. 



Type locality: "Dry and rocky hills South Yuba," California. 



Range: Washington to California in the coast region. 



Specimens examined: Cape Foulweather, Howell; near Union City, Piper in 1890; 

 Bitter Lake, near Seattle, Piper 1127; Springfield, Rabbins, May 10, 1897. 



The common host plants are Gaultheria shallon and Arctosiaphylos tomentosa. 



Zonal distribution: Humid Transition. 



