| Triadenum | |
|---|---|
| Triadenum virginicum | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Malpighiales |
| Family: | Hypericaceae |
| Genus: |
Triadenum Raf. |
| Species | |
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Triadenum, the marsh St. Johnsworts is a genus of flowering plants in the family Hypericaceae or Clusiaceae. The genus is characterized by opposite, blunt-tipped leaves and pink flowers with 9 stamens.