52 BOTANY OF MADISON, LINCOLN', GARRARD, 



Genus Crotou, Croton. 



560. Billy-goat Tea, Croton capitatus (Michx.) 

 561. , C. monanthogynus (Michx.) 



ORDER URTK'ACE.E NETTLE FAMILY. 



Genus Ulmus, Elm. 



562. Slippery Elm, Ulmus fulva (Michx.) 



563. White Elm. U. Americana (L.) 



564. Corky Elm, U. racemosa (Thomas.) 



565. Winged Elm, U. alata (Michx). 



Genus Pla?iera, . 



566. Planer Tree, Planera aqnatica (Gmel.) 



Genus Celt is, Nettie Tree. 



567. Hackberry, Celtis occidentals (L.) 



568. Small Hackberry, C. Mississippiensis (Bosc.) 



Genus Morns, Mulberry. 



569. Red Mulberry, Morus rubra (L.) 



Genus Urtica, Nettle. 



570. , Urtica dioica (L.) 



571. , U. chamaedryoides (Pursh.) 



Genus Laportea, Wood-nettle. [ichaud.) 



572. Stinging Nettle, Laportea Canadensis (Gaud- 



Genus Pilea, Riciiiveed. 



573. Clearweed, Pilea pumila (Gray.) 



Genus Cannabis, Hemp. 



574. Hemp, Cannabis sativa (L.) 



Genus Huiunlus, Hop. 



575. Wild Hop, Humulus Lupulus (L.) 



ORDER l'LAT AN ACE.lv- PLANE-TREE FAMILY. 



Genus Plata uus, Buttonwood. 



576. Sycamore, Platanus occidentalis (E.) 



ORDER JUGLANDACE.E— WALNUT FAMILY. 



Genus [uglans, Walnut 



577. Butternut, Juglans cinerea (L.) 



578. Black Walnut, J. nigra (L.) 



