1916] 
GREENMAN—MONOGRAPH OF SENECIO 177 
Oregon: ‘‘Columbia woods,” Nuttall (Phil. Acad. Nat. 
Sci. Herb.) ; “В. Mts.,’’ Nuttall (Gray Herb.) ; river bottoms, 
Union Co., coll. of 1881, Cusick 928 (Gray Herb.) ; Cascade 
Mountains, alt. 1525 m., Oregon Boundary Commission, coll. 
of 1860, Lyall (Gray Herb.). 
Var. borealis (T. & G.) Greenm. comb. nov. 
S. aureus var. borealis Torr. & Gray, Fl. N. Am. 2:442. 
1843, excluding S. cymbalarioides Nutt.; Gray, Syn. Fl. N. 
Am. 1:391. 1884, and ed. 2, 1886, in small part; Macoun, 
Cat. Canadian Pl. 265. 1884, in part; Porter & Coulter, Syn. 
Fl. Colo. 81. 1874, in part; Coulter, Manual Roeky Mountain 
Region 211. 1885, in part. 
S. aureus Hook. Fl. Bor. Am. 1:333. 1834, in part, not L. 
S. elongatus Howell, Fl. Northwest Am. 1:379. 1900, as to 
S. aureus var. borealis in synonymy, not Pursh. 
Stems slender, nearly naked above; lower leaves sub- 
spatulate to oblanceolate, including the petiole 1.5 to 6 em. 
long, less than 1 em. broad; in all other characters like the 
species into which it passes through several intermediate 
forms. 
Distribution: Arctic America to Wyoming and Utah. 
Specimens examined: 
** Arctic America”: ex Herb. Hooker (Gray Herb.). 
Alberta: Fort Chipewyan, Athabasca, 5 June, 1903, 
Preble & Cary 3 (U. S. Nat. Herb.); Peace River Landing, 
13 June, 1903, Macoun 61239 (Gray Herb.). 
British Columbia: Skagit Valley, alt. 1220 m., 10 July, 
1905, Масоит 69362 (Gray Herb.). 
Montana: Monida, 26 June, 1900, Blankenship (Gray 
Herb.). 
Wyoming: head of Big Goose Creek, Big Horn Moun- 
tains, 15-24 July, 1898, Tweedy 65 (U. S. Nat. Herb.). 
Utah: Thousand Lake Mountain, alt. 3170 m., U. S. Geol. 
and Geog. Survey of the Territories, 19 July, 1875, Ward 
366 (Gray Herb. and U. S. Nat. Herb. 145111 in part). 
Var. streptanthifolius (Greene) Greenm. comb. nov. 
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