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CT and NY west to MI, WI, and SD, south through Mexico.
Herbaceous perennial, 50 to 150 cm, typically leaning rather than erect. Leaves with 5 or more pairs of lance-acuminate lateral leaflets (not including interstitial leaflets). Flowers in long, terminal racemes, petals 5, bright yellow. Rachis of the inflorescence finely pubescent.
Flowers late June to September
Wetland Indicator: Facultative +
The seeds of this plant mature late summer into fall and stick to clothing, like miniature versions of burdock. The interstitial leaflets (small leaflets between the larger ones) are characteristic of plants in this genus.
Gleason, Henry A.
and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States
and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY
Swink, F. and G.
Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.
© Michael Hough 2004