SALICACEAE 



Populus canescens (Ait.) J. E. Smith Gray poplar. 



Mount Hamilton and Anacostia River front. 

 Populus deltoides Marsh Cottonwood. 



Vicinity of pistol range, location 40. 

 Salix fragilis L Crack willow. 



Occasional in wet soil. 

 Salix humilis Marsh Prairie willow. 



Frequent in dry woods and fields. 

 Salix nigra Marsh Black willow. 



Low ground and along streams. 



JUGLANDACEAE 



Carya cordiformis (Wang.) K. Koch Bitternut hickory. 



Frequent in woods. 

 Carya tomentosa Nutt. (C. alba of authors) Mockernut. 



Common in woods. 

 Juglans nigra L Black walnut. 



Hickey Run valley and Mount Hamilton. 



BETULACEAE 



Alnus serrulata (Ait.) Willd. {A. rugosa of most authors) . .Hazel alder. 



Common in wet soil and along streams. 



Betula lenta L Sweet birch. 



Three plants below the Anacostia River overlook were planted but appear 

 as if native, location 47. Also three smaller plants were placed on the north 

 slope of Mount Hamilton, location 10. 



Betula nigra L River birch. 



Frequent in wet or moist soil. 

 Corylus americana Walt American hazel. 



Woods and riverbanks. 



FAGACEAE 



Castanea dentata (Marsh.) Borkh Chestnut. 



Mostly killed by blight. Occasional small stump sprouts can be found. 



Castanea pumila (L.) Mill Alleghany chinquapin. 



Occasional in dry open woods. 



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