Base of S-facing Wisconsin River vally bluff, woods which had invaded former pasture, with Prunus serotina, Juniperus virginiana, Ulmus pumila, Morus alba, Juglans cinerea.
Voucher for wood specimens at Kw, Lw, MADw, MEXUw, RSAw, USZw, Penn State. Wood specimen from 5 m. above the ground from straight main trunk.; Large tree 50 cm. in diameter, bark furrowed; exposed roots bright yellow. Sapwood 3-4 rings thick, pale; heartwood yellow-tan, the cut surface turning a rich reddish brown, but this only superficial and the dried wood still light yellow. Staminate; catkins abundant, on all twigs.