1918] 
 GREENMAN—MONOGRAPH OF SENECIO 39 
1. Plants d the кое States 
Spec 
astern Un ited 
Stated: m hirtellous..:.117. 8. antennariifolius 
bracts of the involucre 
ЕЕ: 
blade; re th i 
volucre abou 
|| Radieal 52 UMP 
лә eolate to 
involu- 
eral bracts 5 
t mm 
юар ..—— — .120. S. Purshianus 
Ore 
and _the Greet. 
Bas 
8. ie eaves nar- 
ate ..121. 8. Howell 
96. Leaves broader, 
to em. 
; heads 
radiate . .I21a. var. lithophilus 
"1215. var. eradiatus 
ПІ PERA Tis ovate. 
Heads radiate.... ЫШ. 8. сопа 
eads discoid..... a. f. aphanac 
HALA ciet leaves a 
Wikre мо ЕС 128. S.Hallü 
2. Plants of Mexico. 
ші pee мана and perma- 
ently white-tomentose .....124. 8. candidissimus 
шы Foliage usually somewhat йе 
AE E E 125. 8. bellidifolius 
