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The common names of hypericum perforatum are common hypericum and St. John's wort. The flowers are bright yellow and grow in clusters at the end of the stems. The petals are marked with black dots. The shrub grows between one and three feet tall.

Dehiscing Capsule and Portion and Inflorescence of Hypericum Perforatum

The common names of hypericum perforatum are common hypericum and St. John's wort. The flowers are bright…

Of the St. John's Wort family (Hypericaceae), the common St. John's wort: left, Hypericum ellipticum; right, Hypericum perforatum.

Common St. John's Wort

Of the St. John's Wort family (Hypericaceae), the common St. John's wort: left, Hypericum ellipticum;…