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Source: Wikipedia
| Hypericum gymnanthum | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Hypericaceae |
| Genus: | Hypericum |
| Section: | H. sect. Trigynobrathys |
| Subsection: | H. subsect. Knifa |
| Species: | H. gymnanthum
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| Binomial name | |
| Hypericum gymnanthum Engelm. & Gray[1]
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| Synonyms[1] | |
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Hypericum gymnanthum, the small-flowered St. John's wort[2] or clasping leaf St. John's wort,[3] is a species of flowering plant in the St. John's wort family Hypericaceae. It was first formally described in 1845.[4]
Description
[edit]H. gymnanthum ranges in height from 0.3 to 1 meters (approximately 1 to 3 feet) in height. Each yellow flower has five petals, each being 3 to 6 millimeters long.[5][6] Its lower leaves are significantly smaller than its upper leaves, which are 1.5 centimeters long and 1 centimeter wide.[6]
Distribution and habitat
[edit]This species' range encompasses the eastern United States, from Florida to New York, and it also occurs in Guatemala.[7][8] It has been introduced to Poland.[7]
It is commonly found in wet habitats such as sinkhole ponds, wet pine flatwoods, bogs, swales, and pine savannas.[9][10] The United States Department of Agriculture classifies H. gymnanthum as a facultative wetland species.[8]
References
[edit]- ^ a b "Hypericum gymnanthum Engelm. & Gray". Plants of the World Online. Royal Botanical Gardens Kew. Retrieved 20 December 2018.
- ^ Robson, Norman K. B. (2015). "Hypericum gymnanthum". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 6. New York and Oxford: Oxford University Press. Retrieved 20 December 2018 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
- ^ "Hypericum gymnanthum Species Page". floraofalabama.org. APA: Alabama Plant Atlas. Retrieved 20 December 2018.
- ^ "Hypericum gymnanthum Engelm. & Gray". ipni.org. International Plant Names Index. Retrieved 20 December 2018.
- ^ "Lady Bird Johnson Wildflower Center - The University of Texas at Austin". www.wildflower.org. Retrieved 2025-08-01.
- ^ a b Godfrey, Robert K. (1981). Aquatic and Wetland Plants of Southeastern United States: Dicotyledons. Jean W. Wooten. Athens: University of Georgia Press. ISBN 978-0-8203-0532-5.
- ^ a b "Hypericum gymnanthum Descriptions". hypericum.myspecies.info. Retrieved 20 December 2018.
- ^ a b "USDA Plants Database". plants.usda.gov. Retrieved 2025-08-01.
- ^ Weakley, A. S. (2015). Flora of the Southern and Mid-Atlantic States. Chapel Hill, NC, University of North Carolina Herbarium.
- ^ "NatureServe Explorer 2.0". explorer.natureserve.org. Retrieved 2025-08-01.
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