Coefficient of Conservatism:
Coefficient of Wetness:
R. W. Smith
Dry to mesic upland forests, swamps and floodplains; less often in dry sandy open ground.
Some plants included in this species by most recent authors have again been recognized as a closely related species, A. bicknellii (Kearney) Rydb., on the basis of more narrowly lance-elliptic leaflets, 7–13 per leaf, and spreading outer bristles on the floral tube. Some of our specimens do have one or more of the stated characters, but do not seem consistently or significantly different from more typical specimens of A. pubescens with 5–7 (–9) leaflets tending to obovate and the calyx bristles all erect or ascending. Nevertheless, this species does need further study.