No. 17.] 



AGRICULTURAL COLLEGE. 



121 



ALISMACEJE. 



Water Plantain. 



Arrow head. 



Alisina Plantago, L. var Americanum. 



Ames ; Charles City. 



Sagittaria variabilis, Engelm. 



Ames ; Charles City ; Burlington. 



Sagittaria graminea, Michx. 



Ames. 



ORCHIDACE.E. 



Showy Orchis. Orchis spectabilis, L. 



Ames ; Fayette. 



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



Ames. 



Habenaria, leucophsea, Gr. 



Ames ; Grinnell ; Charles City. 



Spiranthes cernua, Richard. 



Ames. 



Aplectrum hyemale, Nutt 

 Fayette. 



Cypripedium candidum, Muhl. 



Ames ; Grinnell ; Charles City. 



Smaller Yellow La- Cypripedium parviflorum, Salisb. 



dy's Slipper. J r r r 



Grinnell ; Burlington. 



Larger Yellow La- Cypripedium pubescens, Willd. 

 dy'sSlinper. Jl r r ' 



Ames ; Indianola ; Charles City ; Fayette. 



Showy Lady's Slip- Cypripedium spectabile, Swartz. 



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



Fringed Orchis. 

 Ladies' Tresses. 



Putty-root. 



Small White Lady's 

 Slipper. 



Star grass. 



AMARYLLIDACEJ2. 



Hypoxys erecta, L, 



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

 lington. 



Blue Flag. 



16 



IKIDACEJE. 



Iris versicolor, L. 



Ames; Charles City; Fayette ; Burlington. 



