Hypericum edisonianum
Hypericum edisonianum | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Malpighiales |
Family: | Hypericaceae |
Genus: | Hypericum |
Section: | H. sect. Myriandra
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Subsection: | H. subsect. Ascyrum |
Species: | H. edisonianum
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Binomial name | |
Hypericum edisonianum | |
Synonyms[3] | |
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Hypericum edisonianum, known as Arcadian St. John's wort, Edison's St. John's wort, and Edison ascyrum,
Description
Arcadian St. John's wort is a small, thicket-forming shrub, growing up to 1.5 meters (4.9 ft) tall.[5][6] The stems are reddish-brown, marked with lines when young and with bark peeling in strips as it ages. The leathery leaves are sessile and elliptic, growing 15–26 millimeters (5⁄8–1 in) long and 5–11 millimeters (1⁄4–3⁄8 in) across, paler underneath and waxy above. The leaves quickly fall off, leaving behind gland-like auricles. Flowers are produced in a pseudo-dichotomous arrangement. Each yellow flower has 4 sepals: 2 large and 2 small.[6] The flowers each have 4 bright yellow petals and numerous stamens. The capsules have 3-4 lobes.
Hypericum edisonianum is distinguished from the similar H. crux-andreae by its smaller, thicker leaves, its pseudo-dichotomous branching, and a pair of gland-like auricles that remain after leaves fall off the stem.[5]
Distribution and habitat
In Florida, Hypericum edisonianum is restricted to wet prairies, flatwoods, pond margins, and other low areas in the central peninsula, often on sandy soils.[5][4] It is locally abundant, but only found at 25 sites in 5 conservation areas.[6]
Conservation
Arcadian St. Johns wort is threatened by
References
- ^ "Comprehensive Report Species - Hypericum edisonianum". explorer.natureserve.org. NatureServe. Retrieved 2018-10-12.
- ^ "Hypericum edisonianum". ipni.org. International Plant Names Index. Retrieved 2018-10-12.
- ^ "Hypericum edisonianum". Plants of the World Online. Royal Botanical Gardens Kew. Retrieved 2018-10-12.
- ^ a b "Hypericum edisonianum - Species Details". Atlas of Florida Plants. Retrieved 2018-10-12.
- ^ a b c d "Hypericum edisonianum". hypericum.myspecies.info. Retrieved 2018-10-12.
- ^ a b c d "Edison's ascyrum" (PDF). fnai.org. Florida Natural Areas Inventory. 2000. Retrieved 2018-10-12.