Americana, Linn. Elm. 
Celtis, Tournefort Hackberry 
occidentalis , Linn, 
crassifolia, Lam. S. 
2. Atrocarpeae The Bread. Fruit Tribe. 
Morus, Tournefort 
rubra, Linn. Red Mulberry S. 
alba, Linn. White Mulberry Introduced 
Borya, Wilidenow 
lingustrina Willd. 
3. Urticeae The Nettie Tribe 
Urtica, Tournefort Nettle 
gracilis. Ait. 
Laportea, Gaudich 
Canadensis, Gaud. (Urtica Canadensis, Linn.) 
Pilea, Lindley Richweed 
pumila, Lmdl, 
Boehmeria, Jacq. 
cylindrica. Wind. S. 
Parietaria, Tournefort 
Pennsylvanica, Muhl. Piliitcry 
4. Cannabineae The Hemp Tribe 
Cannabis, Tournefort Hemp 
sativa, Linn. Introduced 
Hum ulw yftrtrgpBaifi. . . 
Humulus, Linnaeus, Hop 
lupulus, Linn. 
PLATANACEAE The Plane Tree Family 
Platanus, Linn. 
occidentalis, Linn. Sycamore 
