=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 records to _Carya ovalis_. The most northern station based upon an existing specimen is the north side of the Mississinewa River east of Eaton in Delaware County. It is a frequent, common to very common tree on the hills in the southern part of the State. It has its mass distribution in the unglaciated part of the State, although it is locally a frequent to a common tree of the hills of the other southern counties. It appears that this species has the ability to invade areas after the virgin forest is cut, and it is not an uncommon sight to see this species in almost pure stands on the hills of cut-over lands. =Remarks.=--This species is often called pignut. Sargent wisely suggests that this name be used exclusively for _Carya cordiformis_. The great abundance of this species in Brown, Morgan and Monroe Counties has been instrumental in building up a large business in the manufacture of hickory chairs and furniture. Frames of furniture are made from the very young trees, and backs and seats from the bark of old trees, which are cut, stripped of their bark, and often left to rot. =6a.= =Carya glabra= variety =megacárpa= Sargent[24]. This variety was reported for Indiana by Heimlich.[25] His report was based on a specimen collected by the author in Franklin County. It was named by Sargent who has a duplicate specimen. Sargent in his revision of the hickories does not include Indiana in its range. The size of the fruit is the character that marks the variety and I do not believe this is sufficient to warrant its separation. I have, therefore, included all Indiana forms under the type.