BOTANICAL SURVEY— SUGAE GXIOVE EEGION 325 



Aceraceae, Maple Family. 

 Acer spicatum Lam. Mountain Maple. Was reported by Bigelow. It is unknown 



to the writer. 

 Acer saccharinum L. Silver Maple. No specimen. 



Acer rubruni L. Red ^laple. Common on both uplands and lowlands. 

 Acer saccharum Marsh. Sugar ^laple. 

 Acer nigrum "Six. Black Sugar Maple. 

 Acer negundo L. Box Elder. 



Anacardiaceae, Sumac Family. 



Rhus copallina L. Upland Sumac. 



Rhus hirta (L.) Sudw. (R. typliina). Staghorn Sumac. 



Rhus glabra L. Smooth Sumac. 



Toxicodendron vernix (L.) Ktz. (Rhus) Poison Sumac. A single individual along 

 the road near the center of section 4, Berne Twp., the extreme southern limit 

 of the species. Reported by Bigelow without comment. Undoubtedly once 

 far more plentiful than now. 



Toxicodendron radicans (L.) Ktz. (Rhus) Poison Ivy. No specimen. 



Subclass, Amentiferae. 

 Platanales. 

 Hamamelidaceae, Witch-hazel Family. 

 Hamamelis virginiana L. Witch-hazel. 



Platanaceae, Planetree Family. 

 Platanus occidentalis L. Sycamore. On uplands as well as lowlands where the 

 light is sufficiently intense. 



Urticales. 

 Ulmaceae, Elm Family. 



Ulmus americana L. White Elm. 

 Ulmus fulva Mx. Slippery Elm. 

 Celtis occidentalis L. Hackberry. 



Moraceae, ^lulberry Family. 



Morus rubra L. Red Mulberry. 



Humulus lupulus L. Hop. 



Cannabis sativa L. Hemp. Fide Bigelow. 



Urticaceae, Nettle Family. 

 Urtica gracilis L. Slender Nettle. No specimen. 

 Urticastrum liivaricatum (L.) Ktze. (Ijaportea canadansis (L.) Gaud.) Wood 



Nettle, Common. No specimen. 

 Pilea pumila (\j.) Raf. (Adicea). Clear Weed. Common. No s})ecimen. 

 Boehmeria cylindrica (L.) Sw. False Nettle. No specimen. 

 Parietaria peniisylvmiica Muhl. Abundant. No spccinieii. 



