Shrubby St. Johnswort
Hypericum prolificum Linnaeus
Shrubby St. Johnswort: https://marylandbiodiversity.com/species/2395
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Hypericum prolificum

Secure  (NatureServe)[1]
Scientific classification Edit this 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. prolificum
Binomial name
Hypericum prolificum

Hypericum prolificum, known as shrubby St. John's wort,[3] is a deciduous shrub in the genus Hypericum. It was named for its "prolific" number of stamens.[4]

Description

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Hypericum prolificum is a shrub growing up to 2 m (6 ft 7 in) tall with elliptic to oblanceolate leaves up to 70 mm (2.8 in) long and 15 mm (0.59 in) broad.[5] The flowerheads have between 1 and 9 flowers, each 15–30 mm (0.59–1.18 in) across with 5 golden yellow petals and numerous stamens.[5] The ovary is usually three-parted, though may have up to five parts in some individuals.[5]

Distribution and habitat

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Hypericum prolificum is native to the central and eastern United States and Ontario.[3][6] Habitats include riparian areas, slopes, thickets, swamp edges, and oak woodlands.[3][7]

[edit]
  • Young leaves emerging in early spring
    Young leaves emerging in early spring
  • In flower
    In flower
  • Flower and buds close-up
    Flower and buds close-up
  • In fruit
    In fruit

References

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  1. ^ "NatureServe Explorer 2.0". explorer.natureserve.org.
  2. ^ "Hypericum prolificum L." ipni.org. International Plant Names Index. Retrieved 2018-09-23.
  3. ^ a b c Robson, Norman K. B. (2015). "Hypericum prolificum". 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 2018-09-23 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  4. ^ "Hypericum prolificum". Go Botany. New England Wildflower Society. Retrieved 2018-09-23.
  5. ^ a b c "Hypericum prolificum". hypericum.myspecies.info. Retrieved 2018-10-21.
  6. ^ NRCS. "Hypericum prolificum". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 2018-09-23.
  7. ^ Reznicek, A. A.; Voss, E. G.; Walters, B. S., eds. (February 2011). "Hypericum prolificum". Michigan Flora Online. University of Michigan Herbarium.


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