104 



Withe-rod. 



Downy Arrow-wood 



Cranberry Tree. 



Bedstraw. 

 Small Bedstraw. 

 Button Bush. 



Iron- Weed. 



Blazing Star 



Joe-Pye Weed. 



Boneset. 



White Snakeroot. 



Aster. 



AGRICULTURAL COLLEGE. ["No. 17. 



Viburnum nudum, L. 

 Fayette. 



Viburnum pubescens, Pursh. ' 



Ames. 



Viburnum Opulus, L. 



This, or a nearly allied species, is found at Charles City. 

 RUBIACE.E. 



Galium concinnum, Torr. & Gr. 



Burlington. 



Galium trifidum, L. 



Ames ; Grinnell ; Charles City. 



Cephalanthus occidentalis, L. 



Ames ; Burlington. 



COMPOSITE. 



Vernonia fasciculata, Michx. 



Ames ; Grinnell ; Charles City ; Burlington. This, ou low pas- 

 ture lands, is a somewhat troublesome weed. 



Liatris cylindracea, Michx. 



Ames ; Grinnell. 



Liatris scariosa, Willd. 



Ames ; Indianola ; Grinnell ; Charles City ; Burlington. 



Liatris pychnostachya, Michx. 



Ames ; Indianola ; Grinnell ; Charles City. 



Kulinia eupatorioides, L. 



Ames ; Grinnell. 



Eupatorium purpureum, L. 



Ames ; Grinnell ; Charles City. 



Eupatorium perfoliatum, L. 



Ames ; Indianola ; Charles City ; Fayette ; Burlington. 



Eupatorium ageratoides, L. 



Ames ; Grinnell. 



Aster sericeus, Yent. 



Ames ; Grinnell ; Charles City. 



Aster patens, Ait. 



Ames ; Grinnell. 



Aster lsevis, L. 



Grinnell. 



