33 



8 1 -' Subglobose with husk splitting freely; nut small, 



h Thin-shelled SMALL-FRUITED HICKORY (H. microcarpa) . 



h2 Thick-shelled PALE-LEAF HICKORY (H. villosa). 



f 4 7-9, mostly obovate and large; fr. with thick free-splitting husk and thick- 

 shelled ribbed nuts; petioles and new growths 

 g; Densely hirsute; bark with rough firm ridges (not shaggy) ; nut globular 



or little compressed MOCKER-NUT HICKORY (H. alba) . 



g- Glabrous or pubescent; bark shaggy with long strips; nut very large, 



compressed KING-NUT HICKORY (H. laciniosa) . 



f 5 7-11, lanceolate to narrow obovate, the lower ones somewhat falcate; fr. 

 with elevated sutures; nut with thin shell and generally bitter cornel. 

 g Nut smooth, whitish and little compressed. 



BITTER-NUT HICKORY (H. minima). 

 g2 Very rugose, ridged and compressed, brownish. 



WATER HICKORY (H. aquatica). 

 f 6 9-11 lance-ovate, falcate; fr. cylindrical-oblong, husk thin. 



PECAN (H. Pecan). 

 Leaflets 9-15, subsessile (except the terminal one) with reddish stems; fr. 



very small berry-like apples in loose cymose clusters; leaflets 

 f Acuminate, glabrous and teeth scarcely spreading; leaf -buds glutinous. 



AMERICAN MOUNTAIN ASH (Sorbus Americana). 

 t- Acute or obtuse a. 



