There are at least nine members of the St. Johnswort and Waterwort order: Theales found in Montana.^[1] Some of these species are exotics (not native to Montana).^[2]

St. John's wort

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Family: Clusiaceae

• Hypericum anagalloides, tinker's-penny
• Hypericum majus, larger Canadian St. John's-wort
• Hypericum perforatum, common St. John's-wort
• Hypericum scouleri, western St. John's-wort
• Hypericum scouleri subsp. nortoniae, western St. John's-wort
• Hypericum scouleri subsp. scouleri, Scouler's St. Johns-wort

Waterwort

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Family: Elatinaceae

• Elatine brachysperma, short-seeded water-wort
• Elatine californica, California water-wort
• Elatine triandra, longstem water-wort

Further reading

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• Schiemann, Donald Anthony (2005). Wildflowers of Montana. Missoula, MT: Mountain Press Publishing. ISBN 0-87842-504-7.

See also

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• List of dicotyledons of Montana