BOTANY. 97 



HlERACIUM VENOSUM L. 



Not uncommon. 



56. LEONTODON L. Fall Dandelion. 



Leontodon autumnalis L. 



Painesville, Wm, C. Werner. 



57. TARAXACUM Hall. Dandelion. 



Taraxacum officinale Weber. 

 Everywhere. 



58. LACTUCA L. Lettuce. 



Lactuca canadensis L. 

 Common. 



Lactuca floridana (L. ) Gaertn. 

 Apparently over the whole state. 



Lactuca hirsuta Muhl. 



Licking Co., H. L.Jones (Cat.) The plant given as above by Craig (O. S. I). 

 Flora,) and Lazenby and Werner (Sup. Cat. ) is L. floridana. 



Lactuca ludoviciana (Nutt.) DC. 



" Ohio " J. L. Riddell (Synop. 1835.) 



Lactuca pulchella (Ph.) DC. 

 Columbus, Wm. C. Werner. 



Lactuca sagittaefoeia Ell. (L. integrifolia Bigel.) 

 Over the state, not abundant. 



Lactuca spicata Lam. {L. leucophaea Gray). 

 Throughout the state. 



Lactuca spicata integrifolia (Gray) Britton. (L. leucophaea integrifolia Gray; 

 Northern and central Ohio; no specimens seen from southern Ohio. 



Lactuca scariola L. 



Over the whole State. 



Lactuca villosa Jacq. (L. acuminata Gray). 



"Miami Country," J. L. Riddell (Synop. 1835) ; Licking Co., H. L. Jones (Cat) , 

 Cincinnati, Jos. F.James (Cat.) 



F/). PRENANTHES L. Rattlesnake-root. 



Prenanthes alba L. 



Throughout the state. 



7 G. O. 



