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Common St. Johnswort (Hypericum perforatum)
Image ID: 2011/gtwn58T
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Introduced
Family:
Clusiaceae (Mangosteen)
Height: 1 to 2.5 ft.
Blooms: June to
September
Leaf Type:
smooth
Bloom Size: 1 in. (typical)
Flower Description:
Flat or rounded clusters,
Regular blooms, 5 parts
Location: Ghost Town Trail
Date: 6/19/2011
More photos of this flower
Common St. Johnswort may be
easily confused with:
- Spotted St. Johnswort
Spotted SJW has a larger leaf (at least 1½ in.) and smaller flowers. Both species have black spots on the flower, but common has them just on the edges of the petals, while spotted has profuse spots on the backs of the petals.
We started out as wildflowers from the bicycle trails of western Pennsylvania, but we've
grown!
Meyer, Joseph E. (1918). The Herbalist and Herb Doctor. Hammond, Ind.: Indiana Herb Gardens. 400 pp.
