Perennial; lvs 5(7)-parted (or even compound), doubly serrate, or toward the apex incised; bractlets like the bracts but smaller; fls greenish-white, the fertile ones sessile, the staminate 12-25 in each umbellet and surpassing the frs; sep lance-subulate, 1-1.5 mm, shortly connate below, equaling the pet, or nearly so; anthers greenish-white; fr subsessile, 4-6 mm, narrowed and with rudimentary bristles toward the base; styles recurved, exceeding the bristles. Woods; Que. and Nf. to B.C., s. to n. Fla., Mo., and N. M. June-Aug.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

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From Flora of Indiana (1940) by Charles C. Deam

Infrequent in moist or dry woods, usually associated with white oak. I have seen no specimens from the southern part of the state.