[The St. John's-wort Family in Mt. Adams Country]

Scouler's St. Johnswort, Scouler's St. John's-wort, Western St. John's-wort

Hypericum scouleri

Synonyms: Hypericum formosum, Hypericum formosum ssp. scouleri, Hypericum formosum ssp. scouleri var. scouleri, Hypericum formosum var. scouleri, Hypericum scouleri ssp. scouleri

Scouler's St. Johnswort, Scouler's St. John's-wort, Western St. John's-wort: Hypericum scouleri ssp. scouleri (Synonyms: Hypericum formosum, Hypericum formosum ssp. scouleri, Hypericum formosum ssp. scouleri var. scouleri, Hypericum formosum var. scouleri, Hypericum scouleri ssp. scouleri) - Scouler's St. Johnswort, Scouler's St. John's-wort, Western St. John's-wort: Hypericum scouleri ssp. scouleri (Synonyms: Hypericum formosum, Hypericum formosum ssp. scouleri, Hypericum formosum ssp. scouleri var. scouleri, Hypericum formosum var. scouleri, Hypericum scouleri ssp. scouleri)

Scouler's St. John's wort blooming in vernally moist wetlands adjacent to Lakeside Road, Conboy Lake National Wildlife Refuge......June 18, 2025.

Scouler's St. John's-wort, Western St. John's-wort: Hypericum scouleri ssp. scouleri (Synonyms: Hypericum formosum ssp. scouleri, Hypericum formosum var. scouleri) - Scouler's St. John's-wort, Western St. John's-wort: Hypericum scouleri ssp. scouleri (Synonyms: Hypericum formosum ssp. scouleri, Hypericum formosum var. scouleri)

The photo at left shows the inflorescence of Scouler's st. john's wort as seen in wetlands at about 1800' along Road K1000 to the east of the Mt. Adams Highway........August 12, 2006. Note the numerous stamens. The photo at right shows the inflorescence of Scouler's st. john's wort as seen in wetlands at about 1800' along Road K1000 to the east of the Mt. Adams Highway.........August 12, 2006.

Subspecies nortoniae differs from subspecies scouleri in having one to several simple stems (rather than multiple, often branched stems) less than 20 cm high and is generally found higher than ssp. scouleri in subalpine habitats.

Paul Slichter