122 GEOLOGY OF OHIO. 



166. ACERATES Ell. Green Milkweed. 



AceraTES floridana 'Lam. (A. longifolia Ell.) 

 Huron Co., H. C. Beardslee (Cat.) 



ACERATES VIRIDIFLORA (Raf.) Ell. 



Northern and central Ohio ; Cincinnati, J. F. James. 



167. ASCLEPIAS L. Milkweed. 



Asclepias Exaltata (L.) Muhl. (A. phytolaccoidesVK) 

 From Lake Erie to the Ohio River. 



Asclepias incarnaTa L. Swamp Milkweed. 

 Common. 



Asclepias incarnata pulchra Ehrh. 



Lorain Co., A. A. Wright ( Cat.) ; Licking Co., H- L. Jones ( Cat) 



Asclepias obtcsifolia Michx. 



"General," H. C. Beardslee (Cat.) 



Asclepias purpurascens L. Purple Milkweed. 

 Over the whole state, infrequent. 



Asclepias quadrifolia l. 



Throughout the state but not abundant, 



Asclepias sulltvantii Engelm. 



Fairfield Co., W. A. Kellerman; Licking Co., H. L. Jones (Cat.) 



Asclepias syriaca L (A. comuti Decaisne.) 

 Everywhere. 



Asclepias TubErosa L. Butterfly-weed. Pleurisy-root 

 Widely distributed. 



Asclepias variegata L. 



Summit Co., Franklin Co., Win. C. Werner. 



Asclepias verticillata l. 



Marblehead (Ottawa, Co.) E. Claassen; Springfield, Mrs. E. J. Spence; Fairfield 

 Co., W. A. Kellerman. 



168. VINCETOXICUM Moench. 



Vincetoxicum nigrum Moench. 

 Painesville, W. C. Werner. 



169. AMPELANUS Raf. {Enslenia Nutt) 



AmpelanuS albidus (Nutt.) {Enslenia albida Nutt.) 

 Cincinnati, J. F. James (Cat.) 



