Coefficient of Conservatism:
Coefficient of Wetness:
Shores and marshy places, trails, and disturbed ground. At least in part introduced from Eurasia. Often found in quite natural settings and possibly partly native, though not collected in Michigan until 1877, in Wayne Co.
The panicle is short, up to 10 or occasionally 12 cm long, and its branches are ± contracted, at least after flowering. See also discussion under A. gigantea. On sandy or muddy shores, plants often produce conspicuous leafy stolons snaking over the ground.