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Hypericaceae - Hypericum L. (weeds) - (St. Johnsworts)
The family Hypericaceae contains around 300 species of herbs, shrubs and trees. The genus Hypericum is the largest with more than 200 species. It includes several agricultural and environmental weeds like common St. Johnswort (Hypericum perforatum), a perennial herb native to Europe and Asia that has been introduced into other regions. The flowers are typically yellow with 5 petals.
The literature database currently contains 41 publications for Hypericum (weeds). Please note that literature records for genera may not be complete. See box above on left for queries from the literature database.
Currently, the following species have been entered into the system: