[Giant-hyssops and Horsemints: The Genus Agastache in the Cascade Mountain Range of Oregon and Washington]

Giant Horsemint, Western Giant Hyssop, Western Giant-hyssop, Western Horse-mint

Agastache occidentalis

The Giant-hyssop of the Cascade Mountain Range of Oregon and Washington - Stem leaves of Giant Horsemint, Western Giant Hyssop, Western Giant-hyssop, Western Horse-mint: Agastache occidentalis

Western giant hyssop as seen at left in a dry meadow off forest road #4420, Mt. Hood National Forest........July 31, 2009. The image at right shows the leaves of what appears to be western giant hyssop atop the Monte Cristo ridgeline, Gifford Pinchot National Forest......May 24, 2025.
Paul Slichter