70 



rather a rare tree in northern Indiana, but becomes more or less frequent 

 in the western part of the State south of the Wabash River and more or 

 less frequent to common on the hills in all of the State south of Marion 

 County. It is most abundant in the unglaciated area. 



Remarks. This species is called mockernut by text books, and bull 

 hickory in the vicinity of New Albany. 



5a. Carya alba variety subcoriacea Sargent. Trees and Shrubs 

 2:207:1913. Only one tree of this variety is known in Indiana and it is 

 located in Posey County on the bank of the cypress swamp about 13 

 miles southwest of Mt. Vernon. Specimens from this tree were sent to 

 Sargent and he referred them to this variety. 1 It differs from the 

 type in 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 somewhat ovate in shape 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. 

 The nut easily distinguishes it from all forms of hickory. The author 

 has bought hickory nuts for table use for several years from Posey 

 County and this nut is frequently found in the assortment which 

 shows that this variety is more or less frequent in that section. 



6. Carya glabra (Miller) Spach. BLACK HICKORY. Plate 27. 

 Very tall medium sized trees, up to 7 dm. in diameter; bark tight, usually 

 dark, fissures shallow on some and quite deep on others; twigs reddish- 

 brown, glabrous, terminal buds small, ovoid, about 7-12 mm. long; 

 ordinary leaves 2-3 dm. long; leaflets generally lanceolate, sometimes 

 quite wide, or wider beyond the middle, prevailing number 5, the 

 terminal usually 11-19 cm. long, somewhat pubescent on unfolding, 

 more or less pubescent below at maturity, usually only the midrib, 

 axils and larger veins with hairs; fruit generally smooth and obovoid, 

 rarely globose or oval, 22-40 mm. long; husk sometimes not opening, 

 more often one or more of the sutures open to less than half way, 

 1-2 mm. thick; nut about 20-30 mm. long and 16-25 mm. 

 wide, rounded at the apex, elongated and rounded at the base, angles 

 wanting or obscure; shell very hard and thick, about 1.5 mm. thick 

 at the thinnest point; kernel sweet and astringent; wood and uses same 

 as that of the shellbark hickory. 



Distribution. Southern Ontario south to the Gulf States and west 

 to Texas and Iowa. This species is reported for all parts of the State. 

 However, the records for the northern counties were made when this 

 species was not separated from Carya ovalis, and since the latter species 

 is quite frequent in the northern counties it is best to refer the early 



iBot. Gaz. 66:237:1918. 



