Hypericum tenuifolium
Species of flowering plant in the St John's wort family Hypericaceae
| Hypericum tenuifolium | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Hypericaceae |
| Genus: | Hypericum |
| Section: | H. sect. Myriandra |
| Subsection: | H. subsect. Centrosperma |
| Species: | H. tenuifolium |
| Binomial name | |
| Hypericum tenuifolium Pursh[1] | |
| Synonyms[2] | |
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Hypericum tenuifolium, known as Atlantic St. John's-wort[3] and sandhill St. John's-wort,[4] is a species of flowering plant in the St. John's wort family, Hypericaceae. It is native to the Southeastern United States.[5]
Description
Atlantic St. John's-wort is a small, spreading shrub, growing 10–50 cm (3.9–19.7 in) tall and forming mats.[5][6] The leaves are very narrow, hence its name tenuifolium (from Latin tenuis 'thin', and folium 'leaf'), and are only 0.4–0.8 mm (0.016–0.031 in) broad and 4–11 mm (1⁄8–3⁄8 in) long, with rounded tips and revolute margins. The flowerheads are narrowly cylindric, producing 1-7 flowers. Each flower is 10–14 mm (3⁄8–1⁄2 in) broad with 5 sepals, 5 bright yellow petals, and 50-90 stamens. The ovaries are three-parted, forming cylindric capsule fruits. It flowers in the summer, typically June through September, but sometimes as late as December.[4]
Distribution and habitat
Hypericum tenuifolium occurs in the Atlantic coastal plain in the southeastern United States, in Alabama, Florida, Georgia, North Carolina, and South Carolina.[5] Its habitat includes dry, open, sandy areas such as pine flatwoods, pine savannas, and sandhills.[5][4]
References
- ^ "Hypericum tenuifolium Pursh". ipni.org. International Plant Names Index. Retrieved 2018-10-13.
- ^ "Hypericum tenuifolium Pursh". Plants of the World Online. Royal Botanical Gardens Kew. Retrieved 2018-10-13.
- ^ USDA, NRCS (n.d.). "Hypericum tenuifolium". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 2018-10-13.
- ^ a b c Weakley, Alan S. (2018), Flora of the Southern and Mid-Atlantic States, working draft of 20 August 2018, University of North Carolina Herbarium, North Carolina Botanical Garden, University of North Carolina at Chapel Hill
- ^ a b c d Robson, Norman K. B. (2015). "Hypericum tenuifolium". 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 2018-10-13 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
- ^ "Hypericum tenuifolium". hypericum.myspecies.info. Retrieved 2018-10-13.
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subg. Hypericum | |||||||||
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| Adenosepalum |
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| Adenotrias | |||||||||
| Androsaemum | |||||||||
| Arthrophyllum | |||||||||
| Ascyreia |
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| Camplyosporus |
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| Coridium |
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| Crossophyllum |
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| Drosocarpium |
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| Elodeoida |
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| Graveolentia |
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| Hirtella |
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| Humifusoideum |
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| Hypericum |
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| Monanthema |
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| Oligostema |
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| Olympia | |||||||||
| Origanifolia |
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| Roscyna | |||||||||
| Sampsonia | |||||||||
| Taeniocarpium |
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| Takasagoya |
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| Triadenoides | |||||||||
| Monospecific |
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subg. Brathys | |||||||||||
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| Brathys |
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| Elodea | |||||||||||
| Myriandra |
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| Thornea |
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| Trigynobrathys |
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