Hypericum ascyron

Hypericum ascyron
Scientific classification
Kingdom:Plantae
Clade:Angiosperms
Clade:Eudicots
Clade:Rosids
Order:Malpighiales
Family:Hypericaceae
Genus:Hypericum
Section:Hypericum sect. Roscyna
Species: H. ascyron
Binomial name
Hypericum ascyron

Hypericum ascyron, the great St. Johnswort[2] or giant St. John's wort[3] is a wildflower in the genus Hypericum.

Description

This large species of Hypericum grows to be 3–5 feet tall. It is perennial and its leaves are a deep green, elliptic, and grow up to five inches long.[4] Its flowers have five petals and it can have thirteen or more stamens.[5][6]

Taxonomy

Accepted infraspecifics include:[7]

  • Hypericum ascyron subsp. ascyron
  • Hypericum ascyron subsp. gebleri
  • Hypericum ascyron subsp. pyramidatum

Distribution

It is found in the American Midwest, as well as parts of New England and Quebec.[8]

References

  1. ↑ "Hypericum ascyron L." ipni.org. International Plant Names Index. Retrieved 2018-09-23.
  2. ↑ "Hypericum ascyron". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 23 November 2015.
  3. ↑ Robson, Norman K. B. "Hypericum ascyron". In Flora of North America Editorial Committee. Flora of North America North of Mexico (FNA). New York and Oxford. Retrieved 2018-09-23 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  4. ↑ Missouri Botanical Garden Retrieved November 23, 2015
  5. ↑ Wildflower Center Retrieved November 23, 2015
  6. ↑ GoBotany: New England Retrieved November 23, 2015
  7. ↑ "Hypericum ascyron L." Plants of the World Online. Royal Botanical Gardens Kew. Retrieved 2018-09-23.
  8. ↑ Illinois Flower Info Retrieved November 23, 2015


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