STATISTICS OF METASPERMAE. 627 



Genera Represented in the Minnesota Valley. Continued. 



NORTHERN 

 EXTR ATROPIC AL . 



WESTERN HEMISPHERE. 



NORTH AMERICA. 



Alopecurus 

 Cinna. . 



Muhlenbergia 



Sporobolus 



Brachyelytrum. 



Ammophila 



Beckmanaia 



Bouteloua , 



Schedonnardus. 



Bulbilis. 



Eatonia. 



Scolpchloa... 

 Panicularia 



Eriophoruin, 



Dulichium 



Heleocharis. 



Acorus 

 Spathyema. 



Calla 



Arisaema . . 



Xyris 



Tradescantia 

 Pontederia . . 



Tofleldia. 



Veratrum 



Zigadenus... 

 Melanthium 



