Infrequent to very rare throughout the state. It is usually found in well drained, alluvial soil along streams and their adjacent terraces. Since the tree has the habit of sending up root suckers at a great distance from the parent tree it is often found in small colonies.
Tree to 30 m; lvs to nearly 1 m, with 3-6 pairs of pinnae, each with several pairs of ovate, abruptly acuminate, short-petiolulate lfls mostly 3-8 נ1.5-4 cm, or the lowest pinnae replaced by single lfls; fls greenish-white, softly pubescent, in terminal panicles 6-20 cm; hypanthium 10-15 mm; pet and sep oblong or oblanceolate, 8-10 mm, exceeding the stamens; pods 8-25 נ3-5 cm; seeds thick and hard, 10-15 mm wide and long; 2n=28. Rich moist woods, seldom abundant; N.Y. to s. Minn. and se. S.D., s. to w. Va., Tenn., Ark., and Okla., mainly midwestern. May.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.