1917] 
GREENMAN— MONOGRAPH OF SENECIO 19 
involucre linear-lanceolate, 5 to 7 mm. long; ray-flowers com- 
monly 8, rays yellow ; disk-flowers 25 to 40; achenes hirtellous. 
Distribution: southern Utah. 
Specimens examined : 
Utah: Silver Reef, in Utah Gravel, alt. 1065-1220 m., May, 
1894, M. E. Jones 51630 (Mo. Bot. Gard. Herb. and U. S. Nat. 
Herb.), түре, and 5149 (U. S. Nat. Herb. and Univ. Calif. 
Herb.) ; Johnson, Kane Co., 23 May, 1894, M. E. Jones 52894 
(U. S. Nat. Herb.). 
83. 8. millelobatus Rydb. Bull. Torr. Bot. Club 27: 171. 
1900; Greenm. Monogr. Senecio, I. Teil, 24. 1901, and in Engl. 
Bot. БАТ 32: 20. 1902. 
S. Tampicanus Gray, Pl. Wright., part 1, 125. 1852, and 
part 2, 99. 1853. 
S. multilobatus Gray, Syn. Fl. N. Am. 12: 394. 1884, and 
ed. 2, 1886, in part, not Torr. & Gray. 
An herbaceous perennial, glabrous or slightly tomentulose 
in the early stages and soon glabrate except in the axils of 
the leaves; stems one to several from a common base, 1.5 to 
4 dm. high, simple or branched, leafy to the inflorescence; 
leaves lanceolate to oblanceolate in general outline, 1.5 to 
10 em. long, .5 to 2 em. broad, pinnately parted into numer- 
ous obovate to cuneate dentate divisions; lower leaves petio- 
late, the upper sessile; inflorescence a terminal few to many- 
headed corymbose cyme; heads 7 to 9 mm. high, radiate; in- 
volucre campanulate, sparingly calyculate; bracts of the in- 
volucre usually about 21, linear-lanceolate, 5 to 6 mm. long, 
glabrous; ray-flowers 8 to 12, rays yellow; disk-flowers 35 to 
50; achenes hirtellous. 
Distribution: western Texas to Arizona and northern 
Mexico. 
Specimens examined: 
New Mexico: hills on the Limpia, coll. of 1851-52, Wright 
1287 (Torrey Herb., Gray Herb., U. 5. Nat. Herb., Phil. Acad. 
Nat. Sci. Herb., and Mo. Bot. Gard. Herb.), TYPE. 
Texas: valley of the Rio Grande, below Dofiana, Parry 658 
