JUGLANDACEAE 



MocKERNUT Hickory 



Carya tomentosa Nutt. [Hicoria alba (L.) Britton] 

 [Gary a alba (L.) Nutt.] 



HABIT. A tree 50-70 feet high and I-2|^ feet in diameter 

 (max. 100 by 4 feet); broad, open crown with large branches. 



LEAVES. 8-12 inches long with 7-9 (rarely 5) leaflets; leaf- 

 lets lanceolate to obovate-oblanceolate, the terminal 4-7 inches 

 long and somewhat larger than the lateral; finely to coarsely 

 serrate margins; thick, dark yellow-green and glabrous above, 

 paler and hairy below, glandular resinous and fragrant. 



FRUIT. Globose to obovoid; P/^-2 inches long; husk ^8-/4 

 inch thick, splitting nearly to the base; thick shell; sweet seed. 



TWIGS. Stout, gray to red-brown, hairy. Winter buds: 

 terminal Yi-V^ inch long, subglobose, red-brown. 



BARK. Thick, firm, dark gray, with shallow furrows and 

 low, interlacing ridges on mature trunks. 



SILVICAL CHARACTERS. Typical of well-drained upland 

 slopes; associated with oak and other hardwoods. 



Pignut Hickory 

 Carya glabra (Mill.) Sweet 



Pignut Hickory differs from rrtockernut in having 5 (rarely 7) 

 essentially glabrous leaflets; fruit usually about 1 inch long, pyri- 

 form or obovoid, with a thin husk (under Y^ inch) splitting only 

 part way to the base ; and an unribbed nut with sweet seed. Eastern 

 States except for Coastal Plain and far north. 



* * * 



Four other unimportant species of "true hickories" have 

 furrowed and firm to scaly bark and are distinguished in the kev 

 They are: 



1. Scrub Hickory, Carya floridana Sarg., on dry Florida hills. 



2. Swamp Hickory, Carya leiodermis Sarg., on wet sites in Arkansas, 

 Texas, Louisiana, and Mississippi. 



3. Sand Hickory, Carya pallida (Ashe) Engl. & Graebn., on dry sites 

 from Virginia and Tennessee to Florida and Alabama. 



4. Black Hickory, Carya texana Buckl., on dry uplands from Indiana 

 to Kansas, to Louisiana and Texas. 



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