1918] 
GREENMAN— MONOGRAPH OF SENECIO 101 
131. S. sphaerocephalus Greene, Pittonia 3:106. 1896; 
Greenm. Monogr. Senecio, I. Teil, 24. 1901, and in Engl. Bot. 
Jahrb. 32 : 20. 1902; Blankinship, Mont. Agr. Coll. Sci. Studies 
1:102. 1904. 
S. altus Rydb. Mem. N. Y. Bot. Gard. 1: 443. 1900; Nelson 
in Coulter & Nelson, Manual Cent. Roeky Mountains, 580. 
1909. 
An herbaceous perennial, floccose-tomentulose throughout; 
stems erect, 3 to 8 dm. high, from a horizontal or ascending 
stoutish rootstock, simple or sparingly branched, striate, 
rather leafy at the base, nearly naked above; radical and 
lower stem-leaves oblong-obovate to oblanceolate, 5 to 25 cm. 
long, 1 to 3.5 em. broad, acute or obtuse, entire or shallowly 
sinuate-denticulate, gradually narrowed below the middle into 
a winged petiole, white floccose-tomentulose on both surfaces 
and, as well as the stem, somewhat glabrate; upper stem- 
leaves few, rather remote, sessile, lanceolate, the uppermost 
bracteiform; inflorescence a terminal rather close, few to sev- 
eral-headed corymbose есуше; heads about 1 em. high, radiate; 
involucre broad-campanulate, calyculate, tomentulose to 
nearly glabrous; bracts of the involucre usually about 21, 
linear-lanceolate, 5 to 6 mm. long, pale green or occasionally 
somewhat tinged with purple and, as well as the bracteoles, 
brownish or black-tipped; ray-flowers 8 to 13, rays yellow; 
disk-flowers 40 to 60; achenes hispidulous. 
Distribution: Montana to Colorado, west to Idaho and Ne- 
vada. 
Montana: Spanish Basin, Madison Range, 17 July, 1896, 
alt. 1830 m., Flodman 912 (Mo. Bot. Gard. Herb.) ; Spanish 
Basin, Gallatin Co., alt. 1980 m., 1 July, 1897, Rydberg & Bes- 
sey 5258 (N. Y. Bot. Gard. Herb., Greene Herb., Univ. of Notre 
Dame, Gray Herb., U. S. Nat. Herb., Mont. Agr. Coll. Herb., 
photograph in Field Mus. Herb. and Mo. Bot. Gard. Herb.), 
type of S. altus Rydb.; Spanish Basin, 25 Aug., 1899, Blankin- 
ship (Gray Herb.) ; head of Brackett Creek, Bridger Moun- 
tains, alt. 2130 m., 16 July, 1902, Blankinship (Gray Herb.) ; 
Shield's River, Park Co., 20 July, 1902, Blankinship (Gray 
Herb.) ; Cottonwood Creek, Tobacco Root Range, alt. 2740 m., 
