TENNESSEE FLORA. 79 



Celtis occidentalis L. O. S. April-May. 



Var. Mississippieusis. Much more common and abundant in 

 Middle Tenn. April. 



Morus rubra L. Along water-courses. O. S. May. 



Madura aurantiaca Lindl. Frequently planted for hedges. 

 May. 



Broussonetia papyrifera Vent. A popular shade tree. Nearly 

 all are male trees, and but few fruit-bearing ones are known in 

 the State. May. 



Planera aquatica GmeWn. Brownsville, West Tenn. April. 



Urtica gracilis Ait. East Tenn. April. 



U. dioica L. Occasionally introduced, not becoming natural- 

 ized. 



U. chamsedryoides Pursh. Abundant about Nashville. April. 



Laportea Canadensis Gaudich. O. S., rich soils. June. 



Pilea puniila Gray. O. S., damp thickets. August. 



Bcehnieria cylindrica Willd. O. S. with the former. July. 



Parietaria Pennsylvauica Muhl. Waste ground ; streets of 

 towns. May- June. 



Cannabis sativa L. Escaping from cultivation into hedges, 

 etc. Not observed indigenous. 



Hnmulus Lupulus L. Like the former. Not indigenous. 

 July. 



PLATANACE^. 



Platanus occidentalis L. Largest in bulk of all our timbers. 

 At water's edge on all creeks and rivers. April. 



JUGLANDACE^. 



Juglans ciuerea L. O. S. along creek and river banks; 

 nowhere in great numbers. May. 



J. nigra L. O. S. Becoming scarce O. S. May. 



Carya olivfeforniis L. Tennessee and Mississippi bottoms in 



West Tenn. Single trees in Middle Tenn., probably planted by 



■early settlers. Smith's place, Mill creek, near Nashville. May. 



C. microearpa Nutt. Lookout Mt., Chattanooga. May. 



C. alba Nutt. Large tree with scaly bark, O. S. April-May. 



