Contains 4 accepted taxa overall.
Characteristics
Classification
Citation
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Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Triadenum fraseri | Frasers Marsh St. Johnswort | Native TN[S1?] (State Rank) G5 (Global Rank) | ||
| Triadenum tubulosum | Lesser Marsh St. Johnswort | Native TN[SNR] KY[S5] (State Rank) G4? (Global Rank) | ||
| Triadenum virginicum | Virginia Marsh St. Johnswort | Native TN[SNR] (State Rank) G5 (Global Rank) | ||
| Triadenum walteri | Greater Marsh St. Johnswort | Native TN[SNR] KY[S5] (State Rank) G5 (Global Rank) |