CATALOGUE, 191 



toothed or 2-3-lobed, terminal one on the lower leaves often roundish and 

 coarsely toothed ; heads many in a compound corymb ; involucres bell-shaped, 

 almost ecalyculate; the scales glabrous, 12-15, 3" long; rays 7-12, 4-5" 

 long ; achenia glabrous. — Forms with the leaves less incised approach S. 

 aureus, and those with much incised leaves resemble 8. multilolatus, but the 

 plant is smaller, has fewer stems, and is almost always somewhat webby- 

 tomentose. New Mexico, Utah and Nevada. Frequent from the West to 

 the East Humboldt Mountains, Nevada, and in the Wahsatch and Uintas ; 

 5-9,000 feet elevation ; May-August. (674.) 



Senecio multilobatus, T. & Gr. PI. Fendl. 109. "Annual or biennial, 

 [and probably sometimes perennial, webby pubescent but] very soon glabrous ; 

 stems very many, a foot high, simple, corymbose at the summit ; leaves some- 

 what fleshy, the primary ones spatulate, often entire ; later ones all pinnately 

 9-21-parted; lower ones long-petioled, the uppermost sessile, the base 

 scarcely or not at aU auriculate ; segments cuneate-oblong, incisely toothed or 

 2-3-lobed at the apex ; corymb dense, the heads numerous ; involucre nearly 

 ecalyculate, of 12-14 scales ; rays 5-6, oblong ; disk-flowers 20-30 ; achenia 

 strigosely puberulent. — Abundant on the Uinta River, (Fremont.) Common 

 on the foot-hills about Salt Lake City and in the lower canons of the Wah- 

 satch; also on Antelope Island; 4,500-6,000 feet elevation; June. The 

 specimens collected were apparently perennial ; the rays are 7-8, and the 

 achenia quite glabrous, and strongly striated lengthwise. The plant grows in 

 dense clumps. (675.) 



Senecio pilifolius, Nutt. Perennial, suffruticose, densely webby- 

 canescent or glabrous ; stems a foot or more high, leafy ; leaves pinnately 

 parted, the divisions 3-9, narrowly linear, 6-15" long, 1" wide, the margins 

 revolute ; heads in a terminal coiymb, rather large ; involucre somewhat 

 calyculate ; rays 7-8, linear, rather long ; achenia canescently strigose. — 

 From the Upper Missouri to New Mexico and California. Green River, 

 Utah, (Stansbury.) 



Senecio eremophilus, Richardson. Perennial, glabrous ; stems striate, 

 numerous, 2-3° high, corymbosely branching toward the summit, leafy; 

 leaves short-petioled, 2-3' long, 6-12" wide, the lower ones sometimes much 

 larger, oblong-lanceolate, deeply incised with unequal ovate-lanceolate toothed 

 segments; heads many, in compound corymbs; involucres cylindrical-bell- 

 shaped, calyculate with a few long spreading bractlets ; scales often black- 



