286 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN, 



tubes in the intervals, and twice pinnate leaves with linear-oblong 

 segments. Rather common in rich soil, at an altitude of 2000— 

 2500 m. 



Montana: Bridger Mts., June 11-15, 1897, Rydhcrg d- Bessey, 

 ^620, ^624 and 462/; Spanish Basin, June 26, 461 p. 



* Peucedanum circumdatum Wats. Proc. Am. Acad. 22: 474 



[Coulter & Rose, Rev. 59] . 



Resembling the preceding, but with glabrous fruit, and the leaves 

 more inclined to be ternate and the leaflets 1-2-pinnately divided. 

 It grows in about the same situations as the preceding. 



Montana: Madison Co., 1886, Tzceedy, j ; Gardiner, 1885, Sj^: 

 Bozeman, Scribncr, 66a; Little Belt Mts., 66; Belt River Caiion, 

 Williams, i4g; Bozeman Pass and Little Blackfoot River, Canby, 

 IJ2; Grafton & Sand Coulee, 1887, /?. S. Williams, i^g (?). 



Yellowstone Park: Mammoth Hot Springs, 1885, Tzvcedy, 

 834. 

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



[Man. R. M. 120 ; Coulter & Rose, Rev. 58 ; Bot. Cal. i : 269] ; 



EiilopJms ambig-juis Nutt. Journ. Acad. Phila. 7: 27. 



In open valle3's and on hillsides, up to an altitude of 2000-2500 m. 



Montana : Bozeman, 1895, Rydbcrg, 2^44; Spanish Basin, 1896, 

 Flodman,' 6g2 and 6gj ; Bridger Mts., 6g4; June 18, 1897, Ryd- 

 berg & Bessey, 462J ; Spanish Basin, June 24, 1897, Rvdbcrg & 

 Bessey, 4622 ; Gallatin Co., 1886, Tzveedy, lo^y ; Bear Gulch, 1887, 

 211; Granite, 1892, Kelscy ; Flat Head River, Wvcth {\.-s^€)\ Belt 

 Mts., 1883, Scj-ibner, 66a; Bozeman, 1883, Canby, 151; Jocko 

 River, 131 ; Hell Gate, 1S80, Watson. 



Yellowstone Park : 1883, Miss Mary Campion ; Slough Creek, 

 1885, Tzveedy, 83 1. 



Peucedanum macrocarpum Nutt. ; Torr. & Gray, Fl. N. Am. i : 



627 [Man. R. M. 120; Coulter & Rose, Rev. 60; Bot. Cal. i: 



270]. 



Hillsides, at altitude of 2000-2500 m. 



Montana: Indian Creek, July 21, 1897, Rydbcrg ci- Bessey, 

 4614; Deer Lodge Co., 3Iiss E. Ware; Bozeman, 1882, Tzveedy; 

 1887, 208; Silver City, 1890, Kelsey ; Sand Coulee, 1881, R. S. 

 Williams^ 148. 



Yellowstone Park: Mammoth Hot Springs, 1885, Tzveedy, 

 8ss. 



