OF DENISON UNIVERSITY. 77 



312. Urtica Tourn. 



656. U. "gracilis Ait. Nettle. 



Waste places everywhere. August ii, 1888; July 22, iSg<y. 



313. Laportea Gaudichaud. 



657. L. Canadensis Gaudichaud. Wood Nettle. 



Woods, common. July 25, 1887; August 8, 1890;, August 24, 

 1891. 



314. PiLEA Lindl. 



658. P. pumila Gray. Richweed. 



Moist places. Augiist i, 1888; August 15, i8go. 



315. Boehmeria Jacq. 



659. B. cylindrica Willd. 



Woods and swamps, very variable according to location. July 

 27, 1887; July 30, 1890; August 31, 1891. 



316. Parietaria Tourn. 



660. P. Pennsylvanica Muhl. 



Woods, common. June 6, 1888; June 25,, 1890. . 



LXXX. PLATANACEAE. 



317. Platanus L. 



661. P. occidentals L. Sycamore. 



Creek banks, common. June 2, 1888; May 11, 18891 



LXXXI. JUGLANDACEAE. 



318. JuglAns L. 



662. J. cinerea L. Butternut. 

 Rich woods,' common. 



663. J. nigra L. Black Walnut. 

 Rich woods, common. 



319. Carya Nutt. 



664. C. alba Nutt. Shell-bark Hickory. 

 Woods and fields, common. 



