Native & Naturalized Plants of the Carolinas & Georgia


725

Forb
Perennial

Non-native: Europe

Documented growing wild in GA NC SC

Common

Look for it in fields, pastures, roadsides, woodland borders, per Weakley's Flora

map
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Invasive?

This plant may be causing problems in natural areas outside its native range, according to authorities such as:

 

full sun partial shade

LEAVES:
Simple
Opposite

FLOWER:
Summer/Fall
Yellow
Bisexual
Radially symmetrical
5 persistent sepals
5 petals
Superior ovary

FRUIT:
Summer/Fall
Capsule

 

TO LEARN MORE about this plant, look it up in a good book!



Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Fabids: Malpighiales

WEAKLEY'S FLORA (11/30/12):
Hypericum perforatum   FAMILY Hypericaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Hypericum perforatum   FAMILY Clusiaceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (1968) 126-01-026:
Hypericum perforatum   FAMILY Hypericaceae

 

COMMON NAME:
European St. Johnswort


Click or hover over the thumbnails to see larger pictures.

image of Hypericum perforatum, European St. Johnswort

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_hype_001_lvd

        

image of Hypericum perforatum, European St. Johnswort

Tim Spira    tpshperforatum2

June        

image of Hypericum perforatum, European St. Johnswort

Tim Spira    tpshperforatum2_2

June        

Leaves sessile, with translucent dots that look like "windows", per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.

image of Hypericum perforatum, European St. Johnswort

JK Marlow    jkm090707_010

July    Avery County    NC

The Roan Highlands

image of Hypericum perforatum, European St. Johnswort

JK Marlow    jkm090707_015

July    Avery County    NC

The Roan Highlands

Numerous flowers borne in a compound cyme, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.

image of Hypericum perforatum, European St. Johnswort

JK Marlow    jkm090707_016

July    Avery County    NC

The Roan Highlands

Flowers 3/4"-1" wide, with black "stitching" on the margins of petals, per Wildflowers of the Southern Mountains.

image of Hypericum perforatum, European St. Johnswort

JK Marlow    jkm090707_020

July    Avery County    NC

The Roan Highlands

Five petals, to 0.4" long, black-dotted near the margin, per Wildflowers of Tennessee.