Distribution.—Southern Quebec and Ontario south to northern New Jersey and west to Minnesota and Missouri. The distribution in Indiana has not been studied. The frequency of its occurrence is not known, and all of the known stations are given. The published records are as follows: Dearborn (Collins); Franklin (Meyncke); Hamilton (Wilson); Jefferson (Barnes) and (Deam); Noble (VanGorder); Parke (Hobbs); St. Joseph (Nieuwland); Steuben (Bradner); Wayne (Petry and Markle); Wells (Deam). Additional records are Hendricks, Noble, Ripley, Vermillion and Wayne by Deam. The published record for Posey County by Deam and Schneck should be referred to Ulmus alata. It prefers a well drained soil and is most frequently found near the base of the slope or on the top of flood plain banks of streams, in ravines, or in a habitat like a beech-sugar maple woods. It is reported to have been frequent in Franklin, Noble and Wells Counties.
Its appearance and habit of growth is so much like the white elm that it is not commonly distinguished from it, which accounts for the lack of definite knowledge of its range in our area.
ULMUS THOMASI Sargent. Hickory or Rock Elm. (× 1/2.)
ULMUS ALATA Michaux. Winged Elm. (× 1/2.)