Kb. 17.] 



AGRICULTURAL COLLEGE. 



105 



Aster azureus, Lindl. 



Grinnell. 



Aster undulatus, L. 



Grinnell. 



Aster cordifolius, L. 



Ames. 



Aster multinorus, Ait. 



Ames ; Grinnell. 



Aster dumosus, L. (?) 



Ames. 



Aster Tradescanti, L. 



Grinnell. 



Aster miser, L. (?) 



Ames. 



Aster simplex, Willd. (?) 



Ames ; Grinnell. 



Aster tenuifolms, L. (?) 



Grinnell. 



Aster carneus, Kees. 



Ames. 



Aster puniceiis, L. 



Grinnell. 



Aster prenanthoides, Muhl. 



Ames. 



Aster oblongifolius, Kutt. 



Grinnell. Seems to vary from typical 



Aster KovEe Angliae, L. 



Ames. 



Erigeron Canadense, L. 



Grinnell. A rapidly spreading weed. 



Erigeron divaricatum, Michx. 



Ames. A native weed, of a low and spreading habit, which is 

 intruding on our pastured prairies. 



Robin's Plantain. Erigeron bellidifolium, Mulil. 



Burlington. 



Common Fieabane. Erigeron Philadelpliicum, L. 



Ames ; Charles City ; Fayette. 



Horse Weed. 



u 



