No. 17.] AGRICULTURAL COLLEGE. 121 



ALISMACEJ3. 



Water Plantain. Alisma Plantago, L. var Americanum. 



Ames ; Charles City. 



Arrow head. Sagittaria variabilis, Engelm. 



Ames ; Charles City ; Burlington. 



Sagittaria graminea, Michx. 



Ames. 



ORCHEDACE.E. 



Showy Orchis. Orchis spectabilis, L. 



Ames ; Fayette. 



Habenaria viridis, R. Br. var. bracteata, Richenbach. 



Ames. 



Fringed Orchis. Habenaria, leucophasa, Gr. 



Ames ; Grinnell ; Charles City. 



Ladies' Tresses. Spiranthes cernua, Richard. 



Ames. 



Putty-root. Aplectrum hyemale, !Nutt. 



Fayette. 



ma 1 e a y s Qyp r ip e( j mm candidum, Muhl. 



Ames ; Grinnell ; Charles City. 



Smaller Yellow La- Cypripedium parvinorum, Salisb. 



dy's Slipper. Jr r r 



Grinnell ; Burlington. 



Larger Yellow La- Cypripedium pubescens, Willd. 



dy's Slipper. * r *■ x 



Ames ; Indianola ; Charles City ; Fayette. 



Showy Lady's Slip- Cypripedium spectabile, Swartz. 



P er - Ames ; Charles City ; Fayette ; Burlington. 



AMARYLLIDACE.E. 



Star grass. 



Hypoxys erecta, L, 



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

 lington. 



IRIDACEJE. 



Blue Flag. Iris versicolor, L. 



Ames ; Charles City ; Fayette ; Burlington. 



16 



