218 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
From central California through eastern Oregon and Washington 
to British America, eastward to western Colorado and western 
W voming. 
Specimens examined: 
CALIFORNIA: Santa Clara Valley, Peckham, May 4, 1866; Plumas County, Mary 
Bf. P. Ames, in 1872; Sonoma County, Samuels 94; Siskiyou, Plumas, and 
Sierra counties, Lemmon, in 1889; Amador County, Jansen 333, May 29, 
1895; Santa Clara County, Jepson, June 9, 1896; Sisson, Siskiyou County, 
Brown, in 1897. 
Orecon: Hall 21, in 1871 (type of Peuecedanwn macrocarpum eurycarpum Gray) ; 
eastern Oregon, //owell, in 1880; Cusick 37, May, 1883; near Eugene City, Lane 
County, Howell 737, June 28, 1893; Malheur Butte, Malheur County, Letherg 
2038, May 12, 1896; Swan Lake Valley, Klamath County, Applegate 231, 
May 24, 1896; Cusick 1840, April 25, 1898. 
WasuHincton: W. Klickitat County, Suksdorf, May-June, 1883; eastern Wash- 
ington, G. A. Vasey, in 1883; Spokane County, Suksdorf, June 20, 1884, 
G. R. Vasey 308, in 1889; Yakima, Franklin, and Whitman counties, //en- 
derson, May-July, 1892; Sandberg & Leiberg 61, 248, in 1893; Pullman, 
Whitman County, Piper 1563, June 24, 1894; Cleveland, Klickitat County, 
Ely, May, 1895; Sheldon 8088, in 1897; Waitsburg, Wailawalla County, 
Horner 221, June 5, 1897; Pullman, Whitman County, //mer 96, May, 1897. 
Ipano: Lower Clearwater River, Nez Perces County, Sandberg 52, April 26, 1892; 
hills near Moscow, Henderson, April-July, 1894; Coeur d’ Alene Mountains, 
Leiberg 13, June 22, 1895; near Lewiston, Nez Perces County, A. A. & 2. 
Gertrude Heller 2970, April 27, 1896, 
Nevapa: Near Virginia City, Bloomer, February 14, 1864; Trinity and W. Hum- 
boldt Mountains, Watson 468, May-June, 1868; Palisade, Jones 3885, June 
14, 1882; Aurum, Jones, June, 1891. 
Cotorapo: Egeria Park, Routt County, Alice Hastiood, July 5, 1891. 
Wyomina: Yellowstone Park, Jireedy, June, 1885; La Barge, Uinta County, 
Stevenson, May-June, 1894; Point of Rocks, Sweetwater County, Nelson 
3086, June 1, 1897; Yellowstone River, Yellowstone Park, 4. & J. Nelson 
5733, July 9, 1899. 
Montana: Columbia Falls, Williams 148, June-July, 1894. 
British CoLuMBIA: Spences Bridge, Macown, May 25, 1889. 
AssinIBoIA: Medicine Hat, Macoun 4964, June 1, 1894; Farewell Creek, Cypress 
Hills, Macoun 10694, June 27, 1895; Wood Mountain Post, Macoun 10696, 
July 10, 1895. 
ALBERTA: Milk River Bridge, Macon 10693, July 19, 1895. 
This abundant and widely distributed species is very constant in its general Habit, 
pubescence, foliage, and striking involucels, but wonderfully variable in its fruit. 
We have attempted in vain to discover lines of cleavage for segregates, not even 
different geographical distribution supporting diverse fruit characters. In some 
forms the linear-oblong fruit is 20 mm. long, but 3 mm. broad, and with very narrow 
wings; while at the other extreme are small oblong or ovate fruits but 6 mm. long, 
nearly as broad, and with wings as broad as body. Between the two extremes, 
however, there seems to be every possible gradation. 
18. Lomatium dasycarpum (Torr. & Gray) C. & R. 
Peucedanum dasycarpum Torr. & Gray, Fl. 1: 628. 1840. 
Peucedanum pringlei C. & R. Bot. Gaz. 13: 209, 1888. 
Very short caulescent or acaulescent, with several stout peduncles 
1.5 to8 em. high from a common root, tomentose pubescent; leaves 
