Wildflowers of the United States | |||||||||||||||||||||||||||||||
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Hypericum frondosum - Cedarglade St. Johnswort, Golden St. Johnswort, Shrubby St. Johnswort. | Hypericum is a large genus of around 400 species including herbs, shrubs, and trees. Some authorities (including the USDA Plants Database) continue to include the Hypericum genus in the plant family Clusiaceae, but relatively recent molecular studies have resulted in establishment of the Hypericaceae family, for which Hypericum is the type genus, although there are at least two other genera in that new classification. It should be noted that at least one of those, the genus Triadenum, is composed of species that have been classified in Hypericum at one time or another, so perhaps the new family Hypericaceae is comprised of what was the Hypericum genus, which is now further broken down into multiple genera. St. Johswort has been used medicinally dating back to ancient Greece. It has been used to treat many conditions such as kidney and lung ailments, insomnia, and to aid wound healing, and is currently used as a dietary supplement to combat depression. However, it has been shown to have detrimental effect on other medications being taken, so it should be used with caution. Hypericum frondosum is generally a more southeastern plant, and is introduced in the disjoint northern part of its published range. Further, reports from SC and VA may be the similar H. prolificum, which has relatively narrower leaves and shorter petals. The common names applied to Hypericum frondosum further help confuse identification - Shrubby St. Johnswort is also applied to H. prolificum, and Golden, Glade, and Cedarglade St. Johswort is applied to both H. frondosum and H. dolabriforme. It grows in dry cedar glades and limestone barrens. Found in: AL, CT, FL, GA, IN, KY, LA, MA, MS, NC, NY, SC, TN, TX, VA   Blue=Native; Grey=Introduced Map from USDA Plants Database: USDA, NRCS. 2017. The PLANTS Database (http://plants.usda.gov, 16 Jan 2025). National Plant Data Team, Greensboro, NC 27401-4901 USA. Search Our Database: Enter any portion of the Scientific, Common Name, or both. Do a general Google search of the entire site: #ad  Follow USWildflowers on Twitter
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