BOTANY. 145 



Negundo negundo (L.) Karst. (N. aceroides Moench; Acer negundo L.) 



Frequent throughout the southern half of the state; Lorain Co., A. A. Wright 

 (Cat.) 5 



UV. Order ANACARDIACEAE. Cashew Family. 



281. RHUSL. Sumach. 



Rhus aromaTica Ait. ( R. canadensis Marsh.) 



Northern Ohio (S. Bass Island, W. Krebs) ; Central Ohio (Franklin Co., Moses 

 Craig); Southern Ohio (Lawrence Co., W. C. Werner); Adams Co., W. A. 

 Kellerman.) 



Rhus Copallina L. Dwarf Sumach. 

 Throughout the state. 



Rhus glabra L. Smooth Sumach. 

 Frequent over the whole state. 



Rhus radicans L. ( J?, toxicodendron L.) Poison Ivy. Poison Oak. 

 Over the whole state. 



Rhus Typhina L. Staghorn Sumach. 

 Throughout the state. 



Rhus vernix L. (J?, venenata DC.) Poison Sumach or Dogwood. 

 In swamps and low grounds throughout the state. 



LV. Order CAUJTRICHACEAE. {Halorageae) Water-Milfoil 



Family. 



282. PROSERPINACA L. Mermaid-weed. 



Proserpinaca palustris I/. 



Northern Ohio, W. Krebs, W. C. Werner. 



Proserpinaca pectinata Lam. 



Dayton, J. L. Riddell (Sup. Cat. 1836.) 



283. MYRIOPHYLLUM Vaill. Water-Mileoil. 



Myriophyllum ambiguum Nutt. 



Licking Co., J. If. Riddell (Sup. Cat. 1836); Cincinnati, Jos. F. Clark (Cat.) 



MYRIOPHYLLUM HETEROPHYLLUM Michx. 



Ashtabula Co., Sara F. Goodrich. 



Myriophyllum pinnaTum (Walt.) B. S. P. (M. scabratum Ms:.) 



Summit Lake (Akron) J. L. Riddell (Sup. Cat. 1836); "Not common," H. C. 

 Beardslee (Cat.); Cincinnati, Jos. F. Clark (Cat.) 

 10 G. O. 



