> Plants glabrous or nearly so, raye> 
/O corollas 12-15 mm. long 
4 Plants thinly woolly; ray-corollas 
/O 18-20 mm. long 
+ Bracts of involucre 15-20 mm. long; rayé 
§ ccrollas 25-35 mm. long 
9. A. diversifolia 
_— 
/O, Ae gracilis 
/|, Ae cordifolia 
— 
Lf 
Pia 
z 
sg 
| 
4 
4 
$ 
3 
4 
4 
3 
3 
3 
i 
en Oa Data ime Ar Ne vb 
