66 Texnessek Flora. 



tion. and is scatteringlv found in the woods in E. Tenn. 

 April. ^[. 



P. heterophylla L. Swamp or downy poplar. In wet wood- 

 lands. April. .May. 



P. grandidentata Michx. Credited to our State in Gray's 

 Manual. 



P, deltoides Marsh. Cottonwood. P. monilifera Ait. Fre- 

 quent in all parts of the State. April, May. 



P. dilatata Ait. Lombardy poplar. Frequently planted, 

 but short-lived in this State. 



SALIX L. 



Salix nigra Marsh. Black willow. Banks of streams. O. 

 S. April. May. ^[. 



S, Wardii Bebb. Aloncr Cumberland River, Nashville. 

 April. 



S. lucida Miihl. Mts. of E. Tenn. April, May. 



S. Babylonica L. Weeping willow. Widely cultivated. 

 O. S. Xative of Asia. April. 



S. purpurea L. Basket willow. Introduced and cultivated 

 for wickerware. March, April. 



S. humilis Marsh. Prairie willow. In the oak barrens in 

 dry soil and on the high mountains. Summit of Big Frog Mt. 

 April. 



S. tristis Ait. Dwarf gray willow. In dr}^ barrens. Tul- 

 lahoma. March. April. 



S. sericea ]\Iarsh. Banks of White Top Creek, S. W. Va. 

 J. K. Small. May. 



S. petiolaris J. E. Smith. Frequent around Nashville. 

 Grows to a tree thirt}- feet high. April. 



S. longifolia Miihl.' S. fluviatilis Nutt. W. Tenn. April, 

 May. 



S. alba L. Introduced from Europe. In moist soil. April. J/. 



BETUEACE.E Agardh. 



CARPINUS L. 



Carpinus Caroliniana Walt. American hornbeam. Water 

 beech. In moist woods. O. S. April, May. Fruit ripe in 

 August, September. 



OSTRYA Scop. 



Ostrya Virginiana (Mill.) Willd. Hop hornbeam. Iron- 

 wood. In dry lands. O. S. April, May. Fruit ripe in July, 

 August. 



