Epilobium leptophyllum Rafinesque. Narrowleaf Willow-herb, American Marsh Willow-herb. Phen: Apr-Oct. Hab: Bogs, fens, seepages, and boggy meadows. Dist: NL (Newfoundland) and NT west to BC and AK, south to w. NC, ne. TN, KS, ne. TX (Mink, Singhurst, & Holmes 2011b), and CA.

Origin/Endemic status: Native

Synonymy: = C, FNA10, G, GrPl, GW2, Il, K1, K3, K4, Mi, NE, NY, Pa, RAB, Tn, Va, W, WV, Munz (1965), Wagner, Hoch, & Raven (2007); > Epilobium leptophyllum Raf. – F; > Epilobium nesophilum Fernald var. nesophilum – F; > Epilobium nesophilum Fernald var. sabulonense Fernald – F

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