OF ARTS AND SCIENCES 



Asprella Hystrix, Willd. Hudson, 



Triticuin viilgare, 



Secale cereale, 



Horcleimi vulgatuiii, 



Aveiia sativa, 



Zea Mays, 



Araceae. 



Arisaenia, tripliylliini, Torr. 

 Peltanclra undulata, Raf. 

 Calla ijalustris, L.. Concord. 

 Syniplocarpus foetidus, Salisb. 

 Acorns Calamus, L. 



75 



Not common. 



An occasional escape. 



A common escape. 



An occasional escape. 



A common escape. 



An occasional escape. 



Common. 



Common. 



Rare. 



Common. 



Not common. 



Lemnaceae. 



Spirodela polyrrhiza, Schleid. 

 Lemiia minor, L. 



Common. 

 Common. 



Xyridaceae. 



Xyris flexuosa, Muhl. 



Not common. 



var. piisilla. Gray. Concord. 



Miss S. F. Sanborn. Not common. 



Eriocaulaceae. 

 Eriocaulon septangvilare. Withering. 



Pontederiacese. 



Common. 



Pontederia cordata, L. Common. 



A white flowered form is found, retaining its characters in 

 cultivation. 



