44 Flora of the Miami valley. 



LEMNACE^— The Duck-weed Family. 



LEMNA, L. 

 L. perpusilla, Torr. Duck-weed. 



TYPHACE^— The Cat-tail Family. 



TYPHA, TouRN. 

 T. latifolia, L. Cat-tail. 



SPARC ANIUM, TouRN. 

 S. eurycarpum, Eng. Bur-reed. 



NAIADACE^— The Pond-weed Famiiy. 



POTAMOGETON, Tourn. 

 P. natans, L. Pond-weed. 



ALISMACE^— The Water Plantain Family. 



ALLS MA, L. 

 A. Plantago, L. 

 var. Americanum. Water Plantain. 



SAGITTARIA, L. 

 S. variabilis, Eng. Arrow-head. 



ORCHIDACEi^— The Orchis Family. 

 ORCHLS, L. 

 O. spectabilis, L. Showy Orchis. 



