Endemic Basionym: Hypericum canadense var. boreale Britton Bull. Torrey Bot. Club 18: 365. 1891 Synonyms: H. mutilum subsp. boreale (Britton) J. M. Gillett
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Massachusetts, and New Hampshire. Hypericum majus hybridizes also with H. mutilum, with subsp. mutilum in Maine, and with subsp. boreale in Michigan and Wisconsin
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Hypericaceae Hypericum Hypericum adpressum Hypericum anagalloides Hypericum apocynifolium Hypericum ascyron Hypericum ascyron subsp. pyramidatum Hypericum boreale
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