370 



JUGLANDACEAE 



Carya 



o ~^5o 

 Map 763 



Carya glabra (Mill.) Sweet 



50 



Map 764 



Carya ovalis (Wang) Sarg. 



that has a tight bark, like that of the mockernut hickory, otherwise it is 

 like the species. This form has the most palatable nut of the genus. The 

 nut is compressed, short, of more than medium size, and has the best 

 cracking quality of all the forms. I have known the nut of this form for 

 many years but I have not had the opportunity of working out the taxon- 

 omy of it. For many years we bought nuts from this area for table use, 

 and I was always able to recognize this nut without mistake. 

 N. Y., se. Ont., to e. Iowa, and se. Nebr., southw. to W. Va., Ala., and La. 



5. Carya tomentosa (Lam.) Nutt. (Carya alba (L.) K. Koch and Hicoria 

 alba (L.) Britt.) Mockernut. Map 762. Very rare in the northern 

 part of the state, becoming infrequent to frequent in the extreme southern 

 part. It is doubtful whether all reports from the northern part of the state 

 by other authors are authentic. It is essentially a tree of dry and usually 

 poor soil but it is found in the lowlands of the Lower Wabash Valley where 

 it is often associated with the preceding species. In the unglaciated area, it 

 is generally found associated with the pignut hickory, black and white 

 oaks, and often with the tulip tree. 



E. Mass., sw. Ont., s. Mich, to se. Iowa, southw. to Fla. and Tex. 



5a. Carya tomentosa var. subcoriacea (Sarg.) Palmer & Steyermark. 

 This variety is known from a single tree on the east bank of the cypress 

 swamp in the southwestern part of Posey County. For several years I 

 bought hickory nuts for table use from this area and nuts of this variety 

 were not infrequent in the lot. It is distinguished from the species by the 

 larger size and shape of the fruit and nut. The dried fruit is 5 cm long, 

 oblong. The nut is oblong, 4.4 cm long, pointed at both ends, or some nuts 

 are somewhat ovoid and more rounded at the base, little compressed, and 

 strongly angled ; shell very thick, 5 mm at the thinnest place ; kernel very 

 small and sweet. 



6. Carya glabra (Mill.) Sweet. (Hicoria glabra (Mill.) Britt.) PIGNUT 

 Hickory. (Generally known in Indiana as black hickory.) Map 763. 

 This species is found principally in the southern half of the state. I think 



