522 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
OROBANCHE. 
Flowers pedicellate. 
Stems low, stout; anthers woolly ..............2...-2222.-2--- 1. O. comosa. 
Stems taller; anthers glabrous or hairy. ..............2....--.- 2. O. californica. 
Flowers subsessile; anthers glabrous or nearly so. 
Stems tuber-like at base, branched above. ................-.--- 3. O. pinorum. 
Stems not tuber-like at base, usually simple... .........2..----- 4. O. ludoviciana. 
1. Orobanche comosa Hook. FI. Bor. Am. 2: 92. 1838. 
Aphyllon comosum A. Gray, Bot. Cal. 1: 584. 1876. 
Phelipoea comosa A. Gray, Pac. R. Rep. 122: 54. 1860. 
Tyee Locauiry: “ Banks of the Columbia.’”’ Collected by Douglas, by Scouler, and by 
Gairdner. 
Rance: Washington to California. 
SPECIMENS EXAMINED: Whidby Island, Gardner 358; Falcon Valley, Suksdorf 82; with- 
out locality, Brandegee 1029; Rock Island, Sandberg & Leiberg 456; Chelan, Elmer 506; 
Grand Coulee, Lake & Hull 778; Soap Lake, McKay 3; Squaw Creek, Cotton 876; Rattle- 
snake Mountains, Cotton 764; Flat Top Island, Lawrence 103; Sucia Island, Flett 2755. 
ZONAL DISTRIBUTION: Upper Sonoran and Transition. 
2. Orobanche californica Cham. & Schlecht. Linnaea 3: 134. 1828. 
Aphyllon californica A. Gray, Bot. Cal. 1: 584. 1876. 
Type Locauity: “E vicinia portus St. Francisco,” California. 
Rance: Washington to California and Nevada. 
SPECIMENS EXAMINED: Walla Walla region, Brandegee 1030. 
3. Orobanche pinorum Geyer; Hook. Kew. Journ. Bot. 3: 297. 1851. 
Aphyllon pinetorum A. Gray, Bot. Cal. 1: 585. 1876. 
Tyre Locatity: “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 EXAMINED: Columbia Valley, latitude 46° to 49°, Lyall, June, 1860; Ione, 
Kreager 403. 
ZONAL bistRiBuTION: Arid Transition. 
4 Orobanche ludoviciana Nutt. Gen. 2: 58. 1818. 
Aphyllon ludovicianum A. Gray, Bot. Cal. 1: 585. 1876. 
Type Locauity: “In sandy alluvial soils around Fort Mandan,’’ North Dakota. 
Rance: Washington to Saskatchewan, Texas, and California. 
SPECIMENS EXAMINED: Rock Island, Sandberg & 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 Locauity: ‘“ Dry and rocky hills South Yuba,” California. 
Rance: 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, Robbins, May 10, 1897. 
The common host plants are Gaultheria shallon and Arctostaphylos tomentosa. 
ZONAL DISTRIBUTION: Humid Transition. 
