Geum aleppicum Jacq.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Stems stout, to 1 m, very hirsute, especially below; lvs highly variable, but their lfls or lobes mostly obovate or oblong, distinctly cuneate at base; lower lvs on long petioles, the principal lfls often mingled with minute ones; lfls mostly incised-serrate; pet yellow, about equaling or slightly exceeding the sep; achenes numerous, ca 200 or more, divaricately hispid about the summit, otherwise glabrous or appressed-hairy; basal segment of the style often hirsute below; terminal segment conspicuously short-hirsute; receptacle glabrous or merely short-hispid; 2n=42. Swamps and wet meadows; interruptedly circumboreal. Amer. plants, the var. strictum (Aiton) Fernald, as here described, occur from Nf. and Que. to Yukon, s. to N.J., Ind., Ill., Io., and N.M. May–July.