Geum laciniatum Murray. Phen: Jun-Jul; Jul-Aug. Hab: Fens and wet meadows, rich alluvial soil of bottomland forests, especially over calcareous or mafic rocks. Dist: NS west to w, ON, MN, and e. SD, south to nw. SC and KS.
Origin/Endemic status: Native
Taxonomy Comments: Two varieties are sometimes recognized: var. laciniatum has glabrous achenes and is generally more northern and more restricted in distribution than var. trichocarpum, which has achenes sparsely to densely pubescent with long stiff trichomes, and ranges from NS west to s. ON, south to MD, VA, w. NC, TN, OH, IL, MO, and KS. The difference appears to be that of a single trait, uncorrelated with other traits, and with largely overlapping geographic distributions; the varieties are not recognized here.
Synonymy: = C, FNA9, GrPl, GW2, K3, K4, Mi, NY, Pa, RAB, Tn, Va, W, Bolle (1933); > Geum laciniatum Murray var. laciniatum – F, G, Il, K1, NE, WV, Robertson (1974); > Geum laciniatum Murray var. trichocarpum Fernald – F, G, Il, K1, NE, Robertson (1974)