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

Rock spiraea blooming amongst rock outcrops on a ridgeline about one-half mile southeast of Whetstone Butte, Siskiyou National Forest..........July 15, 2012.
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Rock spiraea blooming amongst rock outcrops on a ridgeline about one-half mile southeast of Whetstone Butte, Siskiyou National Forest..........July 15, 2012.
Paul Slichter