Hypericum ascyron

Hypericum ascyron, the great St. Johnswort^[2] or giant St. John's wort^[3] is a flowering plant in the family Hypericaceae.

Hypericum ascyron
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Malpighiales
Family:	Hypericaceae
Genus:	Hypericum
Section:	Hypericum sect. Roscyna
Species:	H. ascyron
Binomial name
Hypericum ascyron L.[1]

Description

This large species of Hypericum grows to be 3–5 feet (0.9–1.5 m) tall. It is perennial and its leaves are a deep green, elliptic, and grow up to 5 inches (13 cm) 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]