United States, Minnesota, Steele, Kaplans Woods City Park on the south side of Owatonna. NENW of section;;107N;20W;21
44.0627778 -93.2397222
44° 03' 46" N,93° 14' 23" W;Collector
Forested floodplain of the Straight River. At north-facing edge of mature oak-ash forest. Mesic loamy soil. Associated with Quercus alba, Fraxinus pennsylvanica, Prunus serotina.
A large rhizomatous shrub forming a clone 4 m across, with numerous stems, the largest 4 m tall, and 4 cm dbh. At peak anthesis this date.