1916] 
GREENMAN—MONOGRAPH OF SENECIO 179 
long, .5 to 3 em. broad, entire or dentate towards the apex, 
glabrous on both surfaces, thiek and firm in texture; pet- 
ioles 1 to 8 em. long; stem-leaves petiolate or sessile, in- 
cised-serrate to entire, the uppermost much reduced; in- 
florescence a few to several-headed corymbose суше; heads 
8 to 10 mm. high, radiate; involuere eampanulate, sparingly 
ealyeulate, glabrous or rarely slightly tomentulose at the 
base; bracts of the involucre linear-lanceolate, 5 to 8 mm. 
long, thickish, in age drying dark brown or blackish and 
appearing somewhat glutinous; ray-flowers 8 to 12, rays 
yellow; disk-flowers numerous; achenes glabrous. 
Distribution: Alberta and British Columbia, south to 
New Mexico and Nevada. 
Specimens examined. 
British America: Explorations in subaretie America, coll. 
of 1862, Onion, Kennicott € Hardisty (U. S. Nat. Herb.). 
Montana: Duck Lake, 23 June, 1901, Weller (U. S. Nat. 
Herb.); hills and plains, Midvale, 17 and 24 June, 1903, 
Umbach 78, 154 (U. S. Nat. Herb.); Little Belt Pass, alt. 
2130 m., 10 Aug., 1896, Flodman 910 (U. S. Nat. Herb.) ; 
near Red Lodge, 28 July, 1893, Rose 79 (U. S. Nat. Herb.) ; 
Jack Creek Cañon, 15 July, 1897, alt. 2135 m., Rydberg Ф 
Bessey 5265 (U. S. Nat. Herb.). 
Yellowstone National Park: Swan Lake Flat, 30 July, 
1902, Sheldon 266 (U. S. Nat. Herb.) ; in open aspen groves, 
Yellowstone River, near Junction Butte, 10 July, 1899, A. 
Ф E. Nelson 5823 (U. S. Nat. Herb., Gray Herb., and Mo. 
Bot. Gard. Herb.). 
Wyoming: mountain sides, head of Middle Fork on Pow- 
der River, Big Horn Co., 19 July, 1901, Goodding 302 (Gray 
Herb., U. S. Nat. Herb., and Mo. Bot. Gard. Herb.) ; grassy 
hillside, Ten Sleep Lakes, Big Horn Co., 30 July, 1901, 
Goodding 414 (Gray Herb., U. S. Nat. Herb., and Mo. Bot. 
Gard. Herb.); northwestern Wyoming, 4 Sept, 1893, Rose 
683 (U. S. Nat. Herb.); flats near Holm Lodge, 28 June, 
1911, Reynolds 5 (Field Mus. Herb.); river bottoms, En- 
