Coefficient of Conservatism:
Coefficient of Wetness:
Roadsides and fields; thickets, forests, and borders of forests; often in moist ground, such as borders of marshes and swamps.
This is a more variable complex than the rather narrowly defined R. allegheniensis complex and the R. canadensis complex. The inflorescence is more often loose and ± corymbose, compared to the distinct racemose shape expected in R. allegheniensis and R. canadensis. As in R. canadensis, rare specimens with a few scattered glands may show some influence of R. allegheniensis.