MEMOIRS OF THE NEW VORK BOTANICAL GARDEN. 287 



Peucedanum villosum Nutt. ; Wats. King's Exp. 5: 131 [Man. R. 



M. 120; Coulter & Rose, Rev. 64; Bot. Cal. i: 270]. 



Montana: Deer Lodge, 1888,/^. JV. Trafhagen; Great Falls, 

 1892, R. S. Williams, ijo; Deer Lodge, Miss Frances Hobson; 

 Madison Co., 1888, Tzuccdy, 4; Northern Pacific R. R., 1882, 

 Tzvecdy, 2S'/. 



* Peucedanum Sandbergii Coulter & Rose, Bot. Gaz. 13: 79 [Rev. 



65]- 



A more or less caulescent puberulent plant, with yellow flowers, 



much inflated and scarious margined petioles, and compound ter- 



nately or pinnately dissected leaves with very short linear divisions. 



Rare. 



Montana: Upper Marias Pass and Little Blackfoot River, 



Canby, 153- 



* Peucedanum triternatum Nutt. ; Torr. & Gray, Fl. N. Am. i : 626. 



Like P. simplex, but with broader segments to the leaves, and a 

 narrow wing less than half as wide as the fruit. 



Montana: Grasshopper Valley and Big Hole Valley, 1880, 

 Watson . 

 Peucedanum simplex Nutt.; Wats. King's Exp. 5: 129 [Man. R. 



M. 120; Coulter & Rose, Rev. 69; Bot. Cal. i : 269] ; Peuceda- 



niim triternatum platycarpum Torr. Stansb. Rep. 389; not P. 



flatycarptim E. Mey. 



Dry hills, at an altitude of 1000-2500 m. 



Montana: Bozeman, 1895, Rydberg; 2741 ; Spanish Basin, June 

 24, 1897, Rydberg d- Bessey, 4621; Forks of the Madison, 1897, 

 4617; Pony, July ^6, 461S; Great Falls, 1891, R. S. Williams, 10; 

 Deer Lodge, 1888,/^. W. Traphagen; Helena, i^go, Kelsey ; Boze- 

 man, 1882, Tweedy; Trail Creek, 1887, 207; Lewis and Clarke 

 Co., ^/r5. E. Mtith; Little Blackfoot River, 1883, Canby, 148}^ 

 and i4g; Madison River, 1883, Scribner, 66b. 



Yellowstone Park: Swan Lake, 1885, Tzvcedy, 832. 



* Peucedanum Nevadense Wats. Proc. Am. Acad. 9: 143 [Bot. Cal. 



I : 270]. 



Characterized by its white flowers, pubescent orbicular fruit with 

 prominent ribs and the glaucous more or less puberulent stem. Dry 

 mountains, at an altitude of 2500 m. 



Montana: Lima, 1895, Rydberg, 2740. 



