BOTANY. 145 



Neguxdo negundo (I/.) Karst. (JV. aceroides Moench ; Acer negundo L,.) 



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



(Cat.) 



LIV. Order ANACARDIACEAE. Cashew Family 



281. RHUS L. Sumach. 



Rhus aromatica Ait. ( R. canadensis Marsh.) 



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

 Craig); Southern Ohi :> (Lawrence Co., W. C. Werner); Adams Co., W. A. 

 Kellerman.) 



Rhus copaixina L. Dwarf Sumach. 

 Throughout the state. 



Rhus glabra L. Smooth Sumach. 

 Frequent over the whole state. 



Rhus radicans L. ( R. toxicodendron L.) Poison Ivy. Poison Oak. 

 Over the whole state. 



Rhus TYPHINA L. Staghorn Sumach. 

 Throughout the state. 



Rhus yerxix L. {R. venenata DC.) Poison Sumach or Dogwood. 

 In swamps and low grounds throughout the state. 



LY. Order CALLITRICHACEAE. (Halorageae) Water-Milfoil 



Family. 



282. PROSERPINACA L. Mermaid-weed. 



Proserpixaca palustris L. 



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



Proserpixaca pectixata Lam. 



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



283. MYRIOPHYLLUM Vaill. Water-Miefoh,. 



Myriophyeeum ambiguum Nutt. 



Licking Co., J. L. Riddell (Sap. Cat. 1836); Cincinnati, Jos. F. Clark (Cat.) 



Myriophyeeum heterophyxeum Michx. 

 Ashtabula Co., Sara F. Goodrich. 



Myriophyeeum pixxatum (Walt.) B. S. P. (M. scabratum Mx.) 



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

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

 10 G. O. 



