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Common St. Johnswort (Hypericum perforatum)
Image ID: yrt32Tap/mouseover and drag to zoom/pan.
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: Youghiogheny River Trail
More photos of this flower
- 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.