96 AGRICULTURAL COLLEGE. [No. 17. 



Common Flax. Linum usitatissimwn, L. 



Escaping from cultivation at Ames. 

 GERANIACE.E. 



Wild Cranesbiii. Geranium maculatum, L. 



Ames; Charles City ; Grinnell ; Fayette. 



Pale Touch-me-not. Impatiens pallida, Nutt. 



Grinnell. 



Spotted Touch-me- Impatiens fulva, Nutt. 



not. Ames ; Fayette ; Burlington. 



Violet Wood-Sorrel. Oxalis violacea, L. 



Ames ; Charles City ; Indianola ; Grinnell ; Fayette ; Burling- 

 ton. 



Yellow Wood-Sor- Oxalis stricta, L. 



Tel. Ames ; Charles City ; Indianola ; Grinnell ; Fayette ; Burling- 



ton. 



KUTACEJ2. 



Prickly Ash. Zanthoxylum Americanum, Mill. 



Ames ; Charles City ; Fayette. 



ANACARDIACE.E. 



Smooth Sumach. Rhus glabra, L. 



Ames ; Charles City ; Fayette ; Burlington. 



Poison ivy. Rhus Toxicodendron, L. 



Ames ; Charles City ; Fayette ; Burlington. 

 VITACE^E. 



Summer Grape. VitlS 83Stivalis, Michx. 



Burlington. 



Frost Grape. Vitis cordifolia, Michx. 



Ames; Fayette ; Burlington. 



Virginia Creeper. Ampelopsis quinquefolia, Michx. 



Ames ; Charles City ; Fayette ; Burlington. This beautiful 

 vine is often mistaken for its poisonous relative, the Poison 

 Ivy. This creeper h&sflve leaflets, while the Poison Ivy has 

 but three. 



