Genus
Hypericum (St. john’s worts)
Hypericum anagalloides. Photo: (c) Noah Strycker, some rights reserved (CC BY-NC)
Hypericum /ˌhaɪˈpiːrɪkəm/ is a genus of flowering plants in the family Hypericaceae (formerly considered a subfamily of Clusiaceae). The genus has a nearly worldwide distribution, missing only from tropical lowlands, deserts and polar regions. Many Hypericum species are regarded as invasive species and noxious weeds. All members of the genus may be referred to as St. John’s wort, and some are known as goatweed. The white or pink flowered marsh St. John’s worts of North American
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