KEY TO GENERA AND SPECIES 



77 



with impressed veins. Mature fruit \ to 

 f of an inch long. Usually a shrub. Penn. 

 and northward. (Fig. 137. Commonly 

 more strongly and irregularly lobed than 

 shown in the illustration.) Speckled Alder, 

 Hoary Alder, Alnus ncana (L.) Moench. 

 120. Flowers in the fall. Leaves usually broadest 

 at the middle, and smooth on both surfaces, 



Fig. 140. Fig. 141. Pur- 

 Fern-leaved pie- leaved 



Beech. Beech. 



or somewhat rusty beneath. Mature fruit 

 f to i inch long. Known in the eastern 

 states only from Del. and eastern Md. 

 Seaside Alder, Alnus maritima (Marsh.) 

 Muhl. 



121. Leaves fan-shaped or rounded. Margins 

 coarsely toothed. Cult, and escaped. Na- 



