Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Fabids: Malpighiales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Triadenum virginicum
FAMILY
Hypericaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Virginia Marsh St. Johnswort at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Triadenum virginicum
FAMILY
Clusiaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Hypericum virginicum
SYNONYMOUS WITH Flora of North America
Triadenum virginicum
SYNONYMOUS WITH Floristic Synthesis of North America (Kartesz, 1999)
Triadenum virginicum
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 126-01-005:
Hypericum virginicum FAMILY Hypericaceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Triadenum virginicum
COMMON NAME:
Virginia Marsh St. Johnswort, Common Marsh St. Johnswort
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_trvi2_001_lvd
)
USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide pnd_trvi2_003_lvd
)
JK Marlow jkm160415_193
April Turner County GA
)
JK Marlow jkm160415_195
April Turner County GA
)
JK Marlow jkm160416_237
April Lowndes County GA
Leaves ovate, elliptic, or oblong, base cordate-clasping, sessile, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
Richard and Teresa Ware rtw_h_triadenum_vi_s
August
Petals pale pink; stamens in 3 fascicles of 3 stamen each; perianth 5-merous, per Weakley's Flora (2020).
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Triadenum virginicum
FAMILY
Hypericaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Triadenum virginicum
FAMILY
Clusiaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Hypericum virginicum
SYNONYMOUS WITH
Flora of North America
Triadenum virginicum
SYNONYMOUS WITH
Floristic Synthesis of North America (Kartesz, 1999)
Triadenum virginicum
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 126-01-005:
Hypericum virginicum
FAMILY
Hypericaceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Triadenum virginicum
3733
Forb
Perennial
Habitat: bogs, fens, tidal swamps and marshes, other peaty wetlands, per Weakley's Flora
Native to the Carolinas & Georgia
Common in Coastal Plain (rare elsewhere)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Simple
Opposite
Leaves clasping, cordate, or subcordate at the base
FLOWER:
Summer/Fall
Pink
Radially symmetrical
5-merous
5 persistent sepals
5 petals
9 stamens, persistent, in 3 clusters of 3
Superior ovary
Bisexual
FRUIT:
Summer/Fall
Capsule
TO LEARN MORE about this plant, look it up in a good book!
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p367
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p227
- Wildflowers of Tennessee (Carman, 2005) p067
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p090
- Wildflowers of the Southern Mountains (Smith, 1998) p099
- Wildflowers of the Sandhills Region (Sorrie, 2011) p286
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