Triadenum fraseri

Family (Traditional)
Species:Triadenum fraseri (Spach) Gleason
Common NameFrasers Marsh St. Johnswort
Growth Habitforb
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Duration: Perennial; General Ecology: Terrestrial; Growth Habit: forb; Moisture Requirements: Hydric; Moisture Requirements: Wetland; Region of Origin: North America; Reproductive Phenology: July; Reproductive Phenology: August; Leaf Arrangement: opposite; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Persistance: Deciduous; Leaf Type: broadleaf; Leaflet Number: 0; Anther Type: Dorsifixed; Base Flower Color: Pink; Carpel Number/Pistil: 3; Fruit Dehiscence: Yes; Fruit Type: Capsule; Fruit Wet/Dry: Dry; Hypanthium Present: No; Ovary Position: Superior; Overall Flower Symmetry: Actinomorphic; Perianth Present: Yes; Pistil Number: 1; Placentation Type: Axillary; Sexuality: monoclinous; Sporangium Arrangement: N/A; Stamen Number: 9
C value 8
StatusNative; TN[S1?] (State Rank); G5 (Global Rank)
Specimen(s) View and Download Specimen Details »

** Not applicable or data not available.

Currently no photos are available for this plant.

Species Distribution Map

This species has been reported in the counties highlighted in the interactive distribution map below. Click on a county to display the its name. Click the question mark icon () to view additional information about the ecoregions shown. In the map legend, there are links to toggle the visibility of the ecoregions and/or their labels. In addition, clicking on an ecoregion name will highlight that region on the map.

  • State Boundaries
  • Counties
  • Counties - Species Present
  • Southeastern Plains
    • Blackland Prarie
  • Blue Ridge Mountains
  • Ridge and Valley
  • Cumberland Plateau
  • Cumberland Mountains
  • Allegheny Plateau
  • Interior Plateau
    • Bluegrass Region
    • Nashville Basin
    • Pennyroyal Karst Plain
    • Western Highland Rim
    • Eastern Highland Rim


SynonymFull Citation
Hypericum fraseri Hypericum fraseri (Spach) Steud.

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort.

Counties included on distribution map: Johnson (TN)

Herbaria represented by specimen data listed below: ETSU, TENN

Range of years during which specimens were collected: 2013 - 2013

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
TENN-V-0150804 Johnson Tennessee
Triadenum fraseri
TENN-V-0150799 Johnson Tennessee
Triadenum fraseri
TENN-V-0150802 Johnson Tennessee
Triadenum fraseri
ETSU025685 Johnson Tennessee 12 Sep 2013 Foster Levy, Adam McCullough
DOEM 0316
Triadenum fraseri
TENN-V-0150800 Johnson Tennessee
Triadenum fraseri
TENN-V-0150803 Johnson Tennessee
Triadenum fraseri
ETSU018396 Johnson Tennessee
Triadenum fraseri
TENN-V-0150801 Johnson Tennessee
Triadenum fraseri
ETSU032684 Johnson Tennessee
Triadenum fraseri
ETSU032685 Johnson Tennessee
Triadenum fraseri
ETSU032750 Johnson Tennessee
Triadenum fraseri
ETSU025729 Johnson Tennessee 29 Sep 2013 Adam McCullough
DOEM 0361
Triadenum fraseri
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