Any of many flowering plants of the genus Hypericum; the St John's worts(noun)
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Use "hypericum" in a sentence
"Since the publication of the first edition of the Herb Bible, St. John’s wort also known as hypericum has emerged as the herb of choice for depression."
"Most plants made it and a feweven thrived (clematis and hypericum)."
"There are shrubs too, like deciduous azaleas, the boxwood, hypericum and heathers."