Carya. JUGLANDACE^. 79 



245. Carya porcina, Nutt. 



Pig-nut. Brown Hickory. Black Hickory. Switch-bud Hickory. 



Southern Maine to southern Ontario, southern Michigan and Minne- 

 sota to eastern Nebraska, eastern Kansas, and the Indian Territory, south 

 to Cape Canaveral and Pease Creek, Florida, and the valley of the Nueces 

 River, Texas. 



A tree 2-t to 40 metres in height, with a trunk 0.90 to 1.50 metres in 

 diameter ; dry hills and uplands ; common. 



Wood heavy, hard, very strong and tough, flexible, close-grained, check- 

 ing in drying, containing many large open ducts ; color dark or light brown, 

 the thick sap-wood lighter, often nearlj- white ; used for the same purposes 

 as that of the shell-bark hickory. 



246. Carya amara, Nutt. 

 Bitter-nut. Swamp Hickory. 



Southern Maine to the valley of the Saint Lawrence River, west 

 through Ontario, central Michigan and Minnesota to eastern Nebraska, 

 eastern Kansas, and the Indian Territory, south to western Florida and 

 the valley of the Trinity River, Texas. 



A tree 18 to 24 metres in height, with a trunk 0.G0 to 0.90 metre in 

 diameter ; borders of streams and swamps, in low ground, or often on dry, 

 rich uplands. 



Wood heavy, very hard, strong, tough, close-grained, checking in dry- 

 ing ; layers of annual growth marked by several rows of large open 

 ducts ; medullary rays numerous, obscure ; color dark brown, the thick 

 sap-wood light brown, or often nearly white ; largely used for hoops, 

 ox-yokes, etc. 



247. Carya myristicseformis, Nutt. 

 Nutmeg Hickory. 



South Carolina, near the coast; Arkansas, from the Arkansas River 

 to the Red River Valley. 



A tree 24 to 30 metres in height, with a trunk 0.60 to 0.90 metre in 

 diameter ; sandy ridges, borders of streams and swamps ; rare and very 

 local in South Carolina ; more common and reaching its greatest develop- 

 ment in southern Arkansas. 



Wood heavy, hard, very strong and tough, close-grained, compact, con- 

 taining numerous small open ducts ; layers of annual growth marked by 

 one or two rows of larger ducts ; medullary rays numerous, thin, not 

 conspicuous ; color light brown, the sap-wood lighter. 



248. Carya aquatica, Nutt. 



Water Hickory. Swamp Hickory. Bitter Pecan. 

 North Carolina, south near the coast to Cape Malabar and the Caloosa 

 River, Florida (in Florida not detected within 8 to 10 miles of the coast), 



