Copy permalink to share
Hypericaceae
Triadenum

Triadenum Rafinesque. Common name: Marsh St. John's-wort.

Key to Triadenum

A genus of about 10 species, perennial herbs, of e. North America and e. Asia. Sometimes merged into Hypericum, Triadenum is one of a few basal clades that seem better separated as separate at generic rank from Hypericum.

Glossary (beta!)

References: Robson (2015d) In Flora of North America Editorial Committee (2015). Show full citations.

Show in key(s)

Show parent family | Show parent in key(s)

Show species in Triadenum

Your browser does not support SVGs

Hover over a shape, letter, icon, or arrow on the map for definition or see the legend. Data for arrows not developed for genera and families which may have species only occurring outside the flora area.

image of plant© Jacob Dakar | Triadenum virginicum | Original Image ⭷
image of plant© Gary P. Fleming | Triadenum fraseri | Original Image ⭷
image of plant© Richard & Teresa Ware | Triadenum virginicum CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Gary P. Fleming | Triadenum walteri | Original Image ⭷
image of plant© Richard & Teresa Ware | Triadenum virginicum CC-BY-NC, permission granted to NCBG

Feedback

See something missing or incorrect about Triadenum? Let us know here:

  1. Please include your name and if possible, email in case when need to clarify what you wrote.
  2. If you opt out of including email, please be as specific as possible (e.g., which photo is incorrect?)
  3. Please do not submit questions asking to identify plants or about horticultural topics (e.g., how do I control an invasive plant in my garden?). Instead, those questions can be submitted here for the Carolinas region only.
  4. Please do not send us feedback about unkeyed species as this work is ongoing.
  5. Please allow time for flora edits to show in our next data release. We greatly appreciate your feedback but may require extra time to research complicated taxonomic issues.