Hypericum ascyron
Other regional names: Great St. Johnswort
- Great St. Johnswort
Also known as: Hypericum ascyron var. genuinum Maxim.
- Hypericum ascyron var. genuinum Maxim.
- Taxonomic Rank: Species
- Botanical Family: Hypericaceae
- WCVP Morphological Data: Recorded natively as a perennial.
Hypericum ascyron (commonly known as Great St. John's Wort or giant St. John's-wort) is a herbaceous perennial belonging to the Hypericaceae family. Found natively in Temperate Asia, Tropical Asia, and North America, this species is primarily associated with temperate conditions. The genus Hypericum is notably large, comprising more than 500 species. There are naturally occurring subspecies of this species, which are linked below.