94 FLORA OF THE UPPER SUSQUEHANNA. 



U. racemosa Thomas. Cork Elm. Rock Elm. Least common 

 of our elms. Remarkable for the large, corky ridges of its bark. 

 Not reported south and east of Broome county. 



CELTIS L. 



C. occidentalis L. Hack-berkv. Sugar-berry. Nettle-tree. 

 Rare. Banks of the Chenango in the city of Binghamton ; nu- 

 merous trees, Clute. Apalachin, scarce; Barton, plentiful, Fen- 

 no. Elsewhere not reported. A curious tree, "with the bark 

 of an ash, the leaf of an elm and the fruit of a linden." The 

 thin outer rind of the fruit is black, very sweet and edible. 



MORACE/E. 



HUMULUS L. 



H. Lupulus L. Hop. A well-known plant much cultivated with- 

 in our territory. It is often found wild, and is apparently native. 



The white and red mulberries {Moms alba and M. rubra) 



belong to this family. Neither species seems to occur out of cul- 

 tivation. The hemp ( Camtabis sativa ), occasionally found in 

 waste ground, also belongs here. It apparently does not persist. 



URTICACE/E. 



URTICA L. 



U. gracilis Ait. Common Nettle. Tolerably common in rich, 

 moist soil, along fence-rows, about buildings, etc. 



URTICASTRUM Fabric. 



U. divaricatum (L.) Kuntze. Wood Nettle. Very common in 

 moist, shaded places. ( Laportea Canadensis Gaud. ) 



ADICEA Raf. 



A. pumila (L.) Raf. Rich weed. Clearweed. Common in 

 damp shade. ( Pile a pumila Gray. ) 



BOEHMERIA Jacq. 



B. cyclindrica (L.) Willd. False Nettle. Common in wet 

 places. Flowers minute, clustered, in long axillary spikes which 

 are usually leaf-bearing at the summit. 



