Solidago patula Muhlenberg ex Willdenow. Northern Roughleaf Goldenrod. Phen: Aug-Sep (-Oct). Hab: Bogs, seepages over mafic rocks, grassy balds (as Whitetop Mountain). Dist: NH, VT, NY, s. ON, MI and WI south to w. VA, w. NC, nc. GA, c. TN, w. TN, and se. MO. Coastal Plain records (except northwards, in DE, NJ, and NY) represent misidentifications of S. salicina.

ID notes:The broad basal leaves, saturated wetland habitat, and finely but definitely scabrous upper leaf surface are distinctive.

Origin/Endemic status: Native

Taxonomy Comments: Semple, Tong, & Pastolero (2012) have clarified the taxonomy, distribution, and nomenclature of this and S. salicina.

Synonymy: = Il, K3, K4, Mi, Tn, Semple et al (2021), Semple, Tong, & Pastolero (2012); = Solidago patula Muhl. ex Willd. ssp. patula – FNA20, Pa; = Solidago patula Muhl. ex Willd. var. patula – C, F, G, K1, NE, Oh3, RAB, SE1, Va, Johnson (1995); = Solidago rigida L. – S, misapplied; < Solidago patula Muhl. ex Willd. – GW2, W, WV

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