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Plants of Southern New Jersey

                                                                         
Citizens United to Protect the Maurice River & Its Tributaries
Photos by Renee Brecht    Plants of Southern NJ: Home Citizens United to Protect the Maurice River 

Plant Profile

Triadenum virginicum (L.) Raf.  

marsh St. Johnswort


Triadenum virginicum
Triadenum virginicum
Photo by Renee Brecht Britton and Brown. See credits below.**

Botanical name: Triadenum virginicum (L.) Raf.
Common name: marsh St. Johnswort
Synonomy: Hypericum virginicum L.
Group: Dicot
Family: Clusiaceae
Growth Type: Forb/herb
Duration: Perennial
Origin: Native
Plant height: 12-18"
Foliage: opposite leaves, blue-green with a purple tint. Leaves ovate, sessile.
Flower color: pink, 5 petals
Flower size: 3/4" across
Flowering/fruiting time July to August; fruit mid-September into October
Habitat: open swamps and coastal bogs
Range in New Jersey: throughout the state
Heritage ranking if any: n/a
Distribution Triadenum virginicum distribution
Misc.: An obligate wetland species, i.e., Occurs almost always (estimated probability 99%) under natural conditions in wetlands.
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Sources

**
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 537.
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