COULTER AND ROSE—NORTH AMERICAN UMBELLIFERAE. 227 
From Utah and western Colorado to western Montana and eastern 
Washington. 
Specimens examined: 
Uran: Wasatch Mountains, altitude 2,100 meters, Watson 465, June, 1869; Utah 
Valley, altitude 1,500 meters, Jones 1678, May 3, 1880; Springville, Jones, 
June 3, 1898. 
YoLoRADO: Fort Lewis, southwestern Colorado, Alice Eastwood 21, June 10, 1890; 
Glenwood Springs, Osterhout, June, 1895. 
Wyomrna: Yellowstone Park, Tireedy, June, 1885; same station, Rose 169, 232, 
August 10-19, 1893; same station, Burglehaus, July, 1893; La Barge, Uinta 
County, Stevenson, June-July, 1894; Evanston, Uinta County, Nelson 2967, 
May 28, 1897; Mammoth Hot Springs, Yellowstone Park, A. & FE. Nelson 
5592, June 30, 1899. 
Montana: Belt River, Williams 10, May-July, 1881; Helena, Ae/sey 260, May 
16, 1887; Tweedy, in 1889; near Red Lodge, Rose 15, July 26, 1893; Spanish 
Basin, Rydberg 4621, June 24, 1897. 
Ipano: Wileox, in 1883; near Pocatello, Paliner 48, May 17, 1895; near Lewis- 
ton, Nez Perces County, Henderson, April-June, 1894; Big Camas Prairie, 
altitude 1,500 meters, Henderson 3177, July 14, 1895. 
OrEGon: High ridges, eastern Oregon, //oirell 182, June, 1880; Cusick LA71, in 
1884; Pine Creek, Gilliam County (altitude 490 meters), Farewell Bend, 
Crook County (altitude 1,270 meters), and near Fort Klamath (altitude 
1,470 meters), Leiberg 168, 482, 655, June-August, 1894. 
Wasntnaron: North Yakima, Yakima County, Palmer, in 1890; same station, 
Henderson 2513, May-July, 1892; Waitsburg, Walla Walla County, Forner 
223, June 12, 1897. 
33. Lomatium triternatum (Pursh) C. & R. 
Seseli triternatum Pursh, Fl. 1: 197. 1814. 
Peucedanum triternatum Nutt. in Torr. & Gray, Fl. 1: 6 
bo 
6. 1840. 
Caulescent or acaulescent, puberulent, 3 to 7.5 dm. high: leaves bi- 
ternate to triternate; leaflets from narrowly linear to linear-lanceolate, 
5 to 10 em. long; umbel unequally 5 to 18-rayed, with involu- 
cels of lanceolate or setaceous bractlets; rays 1 to 5 em. long: pedicels 
2 to 4 mm. long: flowers deep yellow; fruit narrowly oblong, gla- 
brous, 6 to 12 mm. long, 3 to 4 mm. broad, with narrow wings and 
somewhat prominent dorsal and intermediate ribs: oil tubes very 
large and broad, solitary in the intervals, 2 on the commissural side; 
seed face very slightly concave. 
Type locality, ‘ton the waters of Columbia River,” Oregon or 
Washington, or, according to Dr. Coues, “on the main Kooskooskee:” 
collected by Lezw/s; type (leaves only) in Herb. Philad. Acad. (fide 
Robinson & Greenman). 
From northeastern California to British Columbia. 
Iuuust. Hook. Fl. Bor. Am, 1: 264. pl. 94. 1834. 
Specimens examined: 
CaLiForNIA: Cisco, Plumas County, Mrs. R. M. Austin. 
Oregon: Klamath Valley, altitude 1,260 meters, Cronkhite 45, in 1864; Silverton, 
Marion County, Ia/l 214, in 1871; Howell, June, 1880; near Rock Creek, 
Morrow County, altitude 1,040 meters, Leiberg 87, May 22, 1894; Klamath 
