[Oceansprays and Rock Spiraeas: The Genus Holodiscus in the Cascade Mountains of Oregon and Washington]

Rock Spiraea

Holodiscus microphyllus var. microphyllus

Synonyms: Holodiscus discolor var. dumosus, Holodiscus discolor var. microphyllus, Holodiscus dumosus var. dumosus

Rock Spiraea: Holodiscus microphyllus var. microphyllus (Synonyms: Holodiscus discolor var. dumosus, Holodiscus discolor var. microphyllus, Holodiscus dumosus var. dumosus) - Rock Spiraea: Holodiscus microphyllus var. microphyllus (Synonyms: Holodiscus discolor var. dumosus, Holodiscus discolor var. microphyllus, Holodiscus dumosus var. dumosus) - Dried inflorescence of Rock Spiraea: Holodiscus microphyllus var. microphyllus (Synonyms: Holodiscus discolor var. dumosus, Holodiscus discolor var. microphyllus, Holodiscus dumosus var. dumosus)

Rock spiraea displaying its fall colors atop Grizzly Peak, Cascade-Siskiyou National Monument........October 14, 2019.
Paul Slichter