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Vick, Albert F. W.
Triadenum virginicum (L.) Raf.
Virginia marsh St. Johnswort
USDA Symbol: TRVI2
USDA Native Status: Native to U.S.
A marsh herb with pink flowers clustered at the top of the leafy stem and in the axils of the paired leaves.
This wetland perennial differs in flower color from most of the St.-Johns-worts, which are yellow. It and other St.-Johns-worts with similar stamen arrangements are placed by some in the genus Triadenum. The name derives from tri (three) and aden (gland) and refers to the three central glands. The related Lesser Marsh St.-Johns-wort (Hypericum tubulosum), found only as far north as southeast Virginia, southern Indiana, and Missouri, has the base of the leaves rounded or tapered, not heart-shaped.
Plant CharacteristicsDuration: Perennial Habit: Herb Flower:
Bloom InformationBloom Time: Jul , Aug
AL , CT , DC , DE , FL , GA , IL , IN , LA , MA , MD , ME , MI , MS , NC , NH , NJ , NY , OH , OK , PA , RI , SC , TN , TX , VA , VT , WI , WV Canada: NS
, PE Native Distribution:
Coastal, from Nova Scotia to s. New England and New York; south to Florida; local in Ohio, Indiana, and Illinois, along Great Lakes. Native Habitat:
Wet sandy areas, swamps, and bogs. USDA Native Status: L48(N), CAN(N)
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Record Modified: 2007-01-01
Research By: TWC Staff