[Vor. 5 
88 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
S. canus var. eradiatus Wats. Bot. King's Exp. 190. 1871. 
Stems about 1 dm. high; lower leaves subovate to oblanceo- 
late, including the petiole 3 to 8 em. long, .5 to 2 cm. broad, 
entire or somewhat dentate; heads discoid. 
Specimens examined: 
Nevada: East Humboldt Mountains, alt. 3050 m., U. S. Geol. 
Expl. of the 40th Parallel, Aug., 1868, Watson 673 (Gray 
Herb. and U. S. Nat. Herb.), TYPE. 
122. S. oreopolus Greenm. Monogr. Senecio, I. Teil, 24. 
1901, and in Engl. Bot. Jahrb. 32 : 20. 1902, name only; Ann. 
Mo. Bot. Gard. 1 : 268, pl. 11. 1914. 
S. canus Gray, Bot. Calif. 1: 412. 1876, in part, not Hook. ; 
Coville, Contr. U. S. Nat. Herb. 4:139. 1893, not Hook.; 
Greene, Fl. Franciscana, 469. 1897, not Hook. 
S. kernensis Greenm. Monogr. Senecio, I. Teil, 24. 1901, and 
in Engl. Bot. Jahrb. 32 : 20. 1902. 
А low herbaceous perennial, white-tomentose throughout; 
stems erect or nearly so, simple or branched, .8 to 3 dm. high, 
often producing elongated slender stolons at the base; basal 
and lower stem-leaves petiolate, ovate to ovate-elliptie, in- 
cluding the petiole 2 to 10 em. long, .5 to 2 em. broad, rounded 
to obtuse or sometimes acute at the apex, entire or sparingly 
dentate, usually permanently white-tomentose on both sur- 
faces, occasionally more or less glabrate, thick and firm in 
texture; uppermost stem-leaves sessile, lance-linear, entire to 
irregularly dentate; inflorescence a terminal corymbose cyme; 
heads few to many, about 1 em. high, radiate; involucre cam- 
panulate, sparingly calyculate; bracts of the involucre com- 
monly 13 (9-13), narrowly lanceolate, 5-7 mm. long, acute, 
glabrous or slightly tomentulose; ray-flowers 5 to 13, rays yel- 
low; disk-flowers 20 to 30; achenes glabrous. 
Distribution: high mountains of California and western 
Nevada. 
Specimens examined: 
California: near summit of Silver Mountain, alt. 3350 m., 
Geol. Surv. Calif., 5 Aug., 1863, Brewer 2050 (Gray Herb. and 
U. S. Nat. Herb.) ; Sonora Pass, alt. 2435-2740 m., Geol. Surv. 
