Biology:Hypericum ascyron
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Short description: Species of flowering plant in the St John's wort family Hypericaceae
| Hypericum ascyron | |
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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: | Hypericum sect. Roscyna |
| Species: | H. ascyron
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| Binomial name | |
| Hypericum ascyron | |
Hypericum ascyron, the great St. Johnswort[2] or giant St. John's wort[3] is a flowering plant in the family Hypericaceae.
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 Asia and North America, in the latter primarily in the American Midwest, as well as parts of New England and Quebec.[8] It occurs in Russia, Mongolia, Korea, Taiwan, China, Vietnam, Canada, and the United States.[9]
References
- ↑ "Hypericum ascyron L.". International Plant Names Index. http://beta.ipni.org/n/30453546-2.
- ↑ "Hypericum ascyron". Natural Resources Conservation Service PLANTS Database. USDA. https://plants.usda.gov/core/profile?symbol=HYAS80.
- ↑ 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, http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=200014194, retrieved 2018-09-23
- ↑ Missouri Botanical Garden Retrieved November 23, 2015
- ↑ Wildflower Center Retrieved November 23, 2015
- ↑ GoBotany: New England Retrieved November 23, 2015
- ↑ "Hypericum ascyron L.". Royal Botanical Gardens Kew. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30453546-2.
- ↑ Illinois Flower Info Retrieved November 23, 2015
- ↑ "Hypericum ascyron Descriptions". http://hypericum.myspecies.info/taxonomy/term/625/descriptions.
Wikidata ☰ Q1041898 entry
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