From Flora of Indiana (1940) by Charles C. Deam
Rather frequent in prairie habitats throughout the state, becoming infrequent or rare in the hilly part of the unglaciated area.
Indiana Coefficient of Conservatism: C = 3
Wetland Indicator Status: FACU
Stem erect, branched above, to 2 m, uncinate- puberulent and spreading-hairy at least above, stipules linear-subulate, to 8 mm; petioles 2-20 mm, the petiole and lf-rachis together a sixth to a half as long as the terminal lfl; lfls oblong or lance-oblong, appressed-hairy beneath, the terminal one 5-9 cm; racemes densely fld, with conspicuous lance-ovate bracts; fls 10-13 mm, on pedicels 5-8 mm; cal 5-7 mm; stipe 2-4 mm; articles 3-5, 5-6.5 mm, the lower margin rounded. Moist soil, thickets, and river-banks; Que. and N.S. to Alta., s. to Md., w. Va., Mo., and Okla., common. July, 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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