[Vor. 3 
102 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
Distribution: Rocky Mountains, near the Canadian bound- 
ary, northward into Alberta and British Columbia. 
Specimens examined: 
Rocky Mountain summits, alt. 2130-2440 m., Oregon Bound- 
ary Commission, coll. of 1861, Lyall (Gray Herb., Kew Herb., 
and Berlin Herb.), түрк. 
Alberta: Sheep Mountain, Waterton Lake, 28-31 July, 1895, 
Macoun (Kew Herb. Berlin Herb. and U. S. Nat. Herb. 
289213) ; on the summit of Moose Mountain, alt. 2285 m., 29 
June-1l July, 1897, Macoun 22781, 22773 (Geol. Surv. Canada 
Herb.) ; on high mountain slopes, Crows Nest Pass, alt. 1825— 
2289 m., 2 Aug., 1897, Macoun 22782, 22783 in part (Geol. 
Surv. Canada Herb.). 
British Columbia: north summit of North Kootenai Pass, 
eoll. of 26 July, 1883, Dawson (Geol. Surv. Canada Herb. 
14826 in part). 
42. 8. hesperius Greene, Pittonia 2:166. 1891. Р]. 3, fig. 1. 
S. hesperis Howell, Fl. Northwest Am. 1:375. 1900. 
S. pyroloides Greenm. Monogr. Senecio, I. Teil, 24. 1901, 
and in Engl. Bot. Jahrb. 32:20. 1902. 
S. auleticus Greene, Leafl. Bot. Obs. & Crit. 2:15. 1909. 
A slender herbaceous perennial; stem erect, 1 to 2 dm. high, 
floccose-tomentulose, especially at the base and in the axils 
of the leaves, later more or less glabrate, obovate-rotund to 
oblanceolate, including the petiole 1 to 6 em. long, .5 to 1.8 
em. broad, entire to crenate-dentate, narrowed at the base into 
a petiole equalling or much exceeding the blade, at first 
tomentulose soon glabrate; stem-leaves sessile, laciniate to 
linear-attenuate; heads usually solitary, occasionally two, 
rarely five, 10 to 12 mm. high, radiate; involucre campanulate, 
sparingly calyculate, slightly tomentulose to glabrous; bracts 
of the involucre 13 to 21, linear-lanceolate, 5 to 8 mm. long; 
rays yellow; disk-flowers rather numerous; achenes glabrous. 
Distribution: southwestern Oregon. 
Specimens examined: 
. Oregon: Eight Dollar Mountain, May, 1884, Howell 160 
(Gray Herb.) ; near Kirbyville, 27 May, 1884, Howell 1511 
