Hypericum boreale (Britton) E.P. Bicknell. Dwarf St. John's-wort, Northern St. John's-wort. Phen: Jul-Sep. Hab: Sinkhole ponds in the Mountains, interdune ponds in the outer Coastal Plain, boggy places. Dist: NL (Newfoundland) and QC west to w. ON, south to VA, nw. NC (?), OH, IN, and n. IL.
Origin/Endemic status: Native
Syn: = C, F, FNA6, G, Il, K1, K3, K4, Mi, NE, NY, Pa, Va, WV; = Hypericum mutilum ssp. boreale – Robson (1985, 1990, 2001, 2002, 2006)