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Common St. Johnswort (Hypericum perforatum) |
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Hypericum punctatum The flowers of Spotted St. Johnswort have black spots or streaks on the underside of the petals, not on the margins. The leaves are larger, more elliptical, and have diffuse black spots, not translucent ones. Common St. Johnswort (Hypericum perforatum) Alien: Native of Europe. Identification: Flowers yellow, with 5 petals, and about 1 inch in diameter. Petals with black dots around the margin and flower with 3 styles. Flowers numerous and clustered near the apex of the plant. Stem heavily branched. Leaves elongate-elliptical, opposite, sessile to the stem, tapering toward the tip, and with translucent dots. Plant 1 to 2.5 feet in height. Distribution: Most of North America. Habitat: Common St. Johnswort is a weed found in a variety of disturbed habitats such as fields, roadsides, and forest margins. Flowering period: June to September. |
Common St. Johnswort (Hypericum perforatum)
Similar Species: Spotted St. Johnswort (Hypericum punctatum)
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Similar Species |
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