Index / Search / Triadenum walteri

§1 Plant

Triadenum walteri (J.G. Gmel.) Gleason

vernacular greater marsh St. Johnswort — species · Clusiaceae


USDA
TRWA
GBIF
3189582
Rank
species
greater marsh St. Johnswort (Triadenum walteri)
Platephotograph · Annika LindqvistCC BY source · iNaturalist ↗

§2Habit & range

Habit and range

Growth habit
Forb/herb
Duration
Perennial
Group
Dicot
Family
Clusiaceae Lindl.
Genus
Triadenum
§2a

Native status, by region

  • L48 Lower 48 States Native
§2b

County-level range

· 309 counties across 18 states/territories
Legend Native · 309 Introduced · 0 Both · 0 Hover a county for detail.

§3Cultivation

No cultivation specs.

USDA has not characterised this taxon. Roughly four out of five plants in the database lack the detailed cultivation record present here — typically because they have not been the focus of NRCS Plant Materials work. Range and distribution data are unaffected.


§4Counties, by state

Recorded in 309 counties across 18 states/territories.

Alabama view state ↗ 21 N
Arkansas view state ↗ 15 N
Delaware view state ↗ 3 N
Florida view state ↗ 12 N
Georgia view state ↗ 16 N
Illinois view state ↗ 9 N
Indiana view state ↗ 9 N
Kentucky view state ↗ 20 N
Louisiana view state ↗ 35 N
Maryland view state ↗ 1 N
Mississippi view state ↗ 22 N
Missouri view state ↗ 14 N
New Jersey view state ↗ 1 N
North Carolina view state ↗ 32 N
Ohio view state ↗ 3 N
South Carolina view state ↗ 26 N
Tennessee view state ↗ 30 N
Virginia view state ↗ 40 N

§5Sources & provenance

USDA PLANTS

Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.

plants.usda.gov/TRWA ↗

GBIF Backbone

Canonical taxonomic identity, synonym resolution, cross-refs. CC0.

gbif.org/species/3189582 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-26

fetched 2026-05-26T09:28:40Z