Biology:Hypericum tenuifolium
| Hypericum tenuifolium | |
|---|---|
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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. Myriandra |
| Subsection: | H. subsect. Centrosperma |
| Species: | H. tenuifolium
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| Binomial name | |
| Hypericum tenuifolium | |
| 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 la 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". International Plant Names Index. http://beta.ipni.org/n/433901-1.
- ↑ "Hypericum tenuifolium Pursh". Royal Botanical Gardens Kew. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:433901-1.
- ↑ "Hypericum tenuifolium". Natural Resources Conservation Service PLANTS Database. USDA. https://plants.usda.gov/core/profile?symbol=HYTE11. Retrieved 2018-10-13.
- ↑ 4.0 4.1 4.2 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
- ↑ 5.0 5.1 5.2 5.3 Robson, Norman K. B. (2015), "Hypericum tenuifolium", in Flora of North America Editorial Committee, Flora of North America North of Mexico (FNA), 6, New York and Oxford, http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250100848, retrieved 2018-10-13
- ↑ "Hypericum tenuifolium". http://hypericum.myspecies.info/taxonomy/term/942.
Wikidata ☰ Q21275377 entry
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