204 GEOLOGY OF OHIO. 



CXVI. Order LEMNACE^. Duckweed Family. 



621. LEMNA L. Duckweed. Duck's-meat. 



LEMNA MINOR L. 



Throughout the state. 



Lemna minor orbicui,ata Austin. 

 Lorain Co., A. A. Wright (Cat.) 



LEMNA TRISULCA L. 



Generally distributed. 



522. SPIRODELA Schleiden. 



Spirodela polyrrhiza (L.) Schleiden. 

 Frequent 



523. WOLFFIA Horkel. 



WOI.FPIA Columbiana Karsten. 



Painesville, H. C. Beardslee (Cat.), Wm. C.Werner; Licking Co., H. L. Jones 

 (Cat; ; Fairfield Co., E. V. Wilcox; Pond weaL of Big Miami, D. L. James. 



CXVII. Order ARACE^B, Arum Family. 



ACORUS L- Sweet-Flag. Calamus. 



Acorus calamus L. 



Throughout the State. 



525. SPATHYEMA Raf. (Symplocarpus Salisb.) Skunk Cabbage. 



Spathyema foetida (L.) Raf. {Symplocarpus /oetidus Salisb.) Skunk Cabbage. 

 Frequent. 



526. CALLA L. Water Arum. 



Calla palustris L. 



Lorain Co., A. A. Wright (Cat.); Painesville, H. C. Beardslee (Cat.); Ashtabula 

 Co., E. E. Bogue ; Alliance, W. L. Crubaugh. 



527. PELTANDRA Raf. Arrow Arum. 



Peltandra virginica (L.) Raf. (P. undulata Raf.) 



Lorain Co., A.A.Wright (Cat.); Cleveland, Wm. Krebs; Painesville, Wm. C. 

 Werner; Licking Co., H.L. Jones (Cat.); Pickaway Co., J. L. Riddell (Synop. 

 1835). 



