Roots fibrous; stems stout, to 12 dm, densely hirsute and also finely short-hairy below; principal lfls of the larger lvs 11-23, lanceolate, sharply serrate, glandular beneath and sparingly pubescent, especially on the veins; axis of the infl glandular, finely pubescent with short, mostly ascending hairs, with or without long spreading hairs; pedicels very short, erect, at maturity abruptly deflexed at the bracteoles; hypanthium turbinate, 3 mm, glandular, sometimes with a few stiff hairs below; outer bristles much shorter than the inner. Damp woods; Conn. and N.Y. to s. Mich., s. Wis., and S.D., s. to Hispaniola and Mex.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
©The New York Botanical Garden. All rights reserved. Used by permission.
From Flora of Indiana (1940) by Charles C. Deam
Throughout the state in low ground along streams, about ponds and swamps, and in marshes and roadside ditches.
Indiana Coefficient of Conservatism: C = 4
Wetland Indicator Status: FACW
Diagnostic Traits: Major leaflets 11 or more; stipules dentate; axis of racemes with minute glands largely obscured by ±dense short hairs and scattered long hairs; petals yellow; fruits (including hooked bristles) to 4 mm long.
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