Hypericum perforatum

From RoguesGallery

[edit] St. John's Wort or Klamath weed

• Present in Alberta – Yes
• Global Invasive Species Database –
• NatureServe Rank –
• Haber, Upland –
• Haber, Wetland –
• CWF, Status & Invasive Range –
• Alberta Revegetation Guidelines –
• The Nature Conservancy –
• CBCN –
• AB Weed – Prohibited Noxious

[edit] Remarks

Occurs in Waterton Park. It's confined to date to low elevation, disturbed sites, along roads. This is a different habitat and range from the native species, H. formosum var. scouleri, which typically is in moist, subalpine meadows, also primarily in the Waterton area. From photographs of flowers alone, it would be possible to mistake one for the other.

Hypericum perforatum L. - common St.Johns wort USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 533.