112 



AGRICULTURAL COLLEGE. 



[No. 17 



Culver's Physic. 



Water Speedwell. 



Purple Gerardia. 



Slender Gerardia. 



Veronica Yirginica, L. 



Ames ; Grinnell ; Charles City. 



Yeronica Anagallis, L. 



Ames. 

 Purslane Speedwell. y eronica per eg rina) L . 



Ames. 



Gerardia purpurea, L. 



Ames ; Grinnell. 



Gerardia tenuifolia, Vahl. 



Ames ; Grinnell ; Burlington. 



Gerardia quercifolia, Pursh. 



Burlington. 



Gerardia auriculata, Michx. 



Ames; Grinnell. 



Castilleia coccinea, Spreng. 



Grinnell ; Charles City ; Fayette ; Burlington. 



Castilleia sessiliflora, Pursh. 



Ames ; Fayette, 



Louse-wort. Pedicularis Canadensis, L. 



Ames ; Indianola ; Grinnell ; Charles City ; Fayette ; Burlington. 



Pedicularis lanceolata, Michx. 



Ames ; Grinnell ; Charles City. Seems to vary from the typ- 

 ical form. 



Scarlet Painted 

 Cup. 



ACANTHACE.E. 



Ruellia ciliosa, Pursh. 



Indianola. 



VEKBENACEiE. 



Blue Vervain. 



White Vervain. 



Hoary Vervain. 



Low Vervain. 



Yerbena hastata, L. 



Ames ; Grinnell ; Charles City ; Burlington, 



Yerbena urticifolia, L. 



Ames ; Grinnell ; Charles City ; Burlington. 



Yerbena stricta, Yent. 



Ames ; Charles City ; Burlington. At Ames flowers not "blue," 

 but decidedly purple. Stem occasionally branched, and 

 leaves sometimes dentate. 



Yerbena bracteosa, Michx. 



Ames ; Grinnell ; Charles City. 



