424 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



17. Lomatiuin hallii (S. Wats.) Coult. & Rose, Contr. Nat. Herb. 7: 224. 1900. 

 Peucedanum hallii S. Wats. Proo. Am. Acad. 11: 141. 1876. 



Type loc.vlity: "Northern Oregon." 



Range: Alpine in northern Oregon and Washington. 



Specimens collected on Mount St. Helens by Mrs. Briggs in 1885, have been somewhat 

 doubtfully referred to this species. It is otherwise known only from the neighborhood of 

 Mount Hood, Oregon. 



18. Lomatium laevigatum (Nutt.) Coult. & Rose, Contr. Nat. Herb. 7: 225. 1900. 

 Peucedanum laentfatum Nutt. in Torr. & Gr. Fl. 1 : 627. 1840. 



Type ix)cality: "Blue Mountains of Oregon." Collected by Nuttall. 

 Range: Along the upper Columbia in Oregon and Washington. 

 Specimens examined: Near Columbus, SuJcsdorfS63. 



19. Lomatiuin tritematum (Pursh) Coult. & Rose, Contr. Nat. Herb. 7: 227. 1900. 

 Se^eli tritfrmtum Pursh, Fl. 1: 197. 1814. 



Peucedanum triUrnatum Nutt.; Torr. & Gr. Fl. 1: 626. 1840. 



Type \jockiat\: "On the waters of Columbia." The type was collected May 6, 1806, 

 by Lewis, on which date the Lewis and Clark Expedition was on the Clearwater River, 

 Idaho, near the mouth of Potlatch River. 



Range: From northeastern California to British Columbia. 



Specimens examined: Yelm, Piper 568; Smith, July, 1890; between Olympia and 

 Gate City, Heller 4056; Goat Mountains, Allen 257; Wenache, Whited 1021; Ellensburg, 

 Whited 658; North Yakima, Uenderson 2513; Peshastin, Sandberg ck Leiherg 596; Fort 

 Colville, Lyall; Spokane County, SvJcidorf 318; Spangle, Piper, July 24, 1899; Pullman, 

 Piper 1.568; Elmer 846; Waitsburg, Horner 104; Cottonwood Creek, Vasey, June 6, 1902; 

 Colville, Kreager 603. 



Zonal distribution: Upper Sonoran and Transition. 



This species varies much in the form of the fruit and in the breadth of the wings. Wide- 

 winged forms have In'en referred to L. ])latycarpum {Peucedanum simplex). If the latter 

 be characterized by having the wings of the fruit broader than the body, our plants would 

 all seem referable to tritematum. Wherever the line of division is drawn, the fact remains 

 that a complete series of intergrades exists. 



20. Lomatitim robustius Coult. & Rose, Contr. Nat. Herb. 7: 228. 1900. 

 Peucedanum tritematum macrocarpum Coult. & Rose, Rev. N. A. Umb. 70. 1888, not 



Peucedanum macrocarpum Nutt. 1840. 



Peucedanum tritematum robustius Coult. & Rose, Contr. Nat. Herb. 3: 228. 1895. 

 Type locality: "Low grounds, W. Klickitat County, Wash." Collected by Suksdorf. 

 Range: Eastern Washington and eastern Oregon. 

 Specimens examined: Klickitat County, Sulcsdorf Vi\ ; Ellensburg, Piper 2742. 



21. Lomatiuin gray! Coult. & Rose, Contr. Nat. Herb. 7: 229. 1900. 

 Peucedanum millefolium S. Wats, in Bot. King Explor. 129. 1871, not Sonder, 1861-62. 

 Peucedanum grayi Coult. & Rose, Bot. Gaz. 13: 209. 1888. 



Type locality: "Antelope Island, (Great) Salt Lake," Utah. Collected by Watson. 



Range: From eastern Washington and Oregon to Wyoming and Colorado. 



Specimens examined: Wenache, Whited 1050; Ellensburg, Whited 657; North Yakima, 

 Henderson, May 29, 1892; west Klickitat County, Suksdorf 280, 24; Morgans Ferry, 

 SuJcsdorf 322; Fort Colville, Lyall in 1861; Hangman Creek, Sandberg & Leiberg 5; Ritz- 

 ville, Sandberg & Leiberg 180; Pullman, Elmer 95; Wawawai, Piper 1767; Touchet River, 

 Horner 609; Blue Mountains, Piper 2339; Dry Creek, Vasey, May 5, June 7, 1902; Cape 

 Horn, Piper 5012. 



Zonal distribution : Arid Transition and Upper Sonoran. 



