t22 THE PLANT LIFE OF MARYLAND 



Hicoria minima (Marsh.) Britton. Bitternut Hickory. 



Throughout the state; in moist forests and flood plains, being most 



abundant in the flood plains of the Midland Zone. 

 Frederick County, near Sugar Loaf (1762). 



Hicoria ovata (Mill.) Britton. Shagbark Hickory. 



Midland and Mountain Zones; in dry Upland forests; rare in the Lower 

 Midland District, frequent in the Upper Midland and the Mountain 

 Zone. 



Hicoria alba (L.) Britton. Mockernut Hickory. 



Throughout the state; in dry Upland forests; most abundant in tbe 

 northern counties of the Eastern Shore and in the Midland Zone. 



Hicoria microcarpa (Nutt.) Britton. 



Midland and Mountain Zones; in moist Upland forests, preferring 

 mountain slopes; rare. 



Hicoria glabra (Mill.) Britton. Pignut Hickory. 



Throughout the state; in Upland forests; common. 



MYRICACEAE. 



Myrica cerifera L. Wax Myrtle. 



Coastal Zone, being confined to the southern counties of the Eastern 



Shore; is most abundant in river swamps and sandy-loam upland 



swamps, also occurring in upland forests. 

 Caroline County, Dover Bridge (2067). 



Myrica carolinensis Mill. Bayberry. 



Coastal Zone, apparently being absent from the remainder of the state; 



frequent on dunes and in other open situations with dry sandy soil, 



also in clay upland forests. 

 Worcester County, Berlin (645). 



Comptonia peregrina (L.) Coulter. Sweet Fern. 



Throughout the state, being most abundant in the Midland and Mountain 

 Zones; in dry upland forests and open situations, flourishing in 

 cleared and burnt-over forests. 



SALICACEAE. 



Populus alba L. Silver Poplar. 



Throughout the state in cultivated grounds; introduced from Europe. 



Populus heterophylla L. Swamp Poplar. 



Coastal Zone; in river swamps and upland swamps, frequent in occur- 

 rence but never numerous in individuals. 

 Worcester County, Snow Hill (1090). 



