Triadenum fraseri
PlantsFamily: Hypericaceae · Genus: Triadenum

Michael Wolf · cc_by_sa
About
Triadenum fraseri, commonly known as bog St. John's wort, Fraser's St. John's wort, and Fraser's marsh St. John's wort, is a perennial flowering plant in the family Hypericaceae that grows in wetlands of Canada and the northern United States. It is named after John Fraser (1750–1811), a Scottish botanist and widely travelled plant collector.
Summary from Wikipedia
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Growing details and traits for Triadenum fraseri in the Library.
No cultivars in the Library yet — the full profile above covers the species itself.