![Rock Spiraea: Holodiscus microphyllus var. microphyllus (Synonyms: Holodiscus discolor var. dumosus, Holodiscus dumosus var. dumosus) Rock Spiraea: Holodiscus microphyllus var. microphyllus (Synonyms: Holodiscus discolor var. dumosus, Holodiscus dumosus var. dumosus)](http://science.halleyhosting.com/nature/plants/5petal/rose/holodiscus/microphyllus/microphyllus/microphyllus8a.jpg)
Rock Spiraea: Holodiscus microphyllus var. microphyllus (Synonyms: Holodiscus discolor var. dumosus, Holodiscus dumosus var. dumosus)
Spiraea densiflora (syn. S. splendens), Subalpine Spirea or Rosy Spira – Dancing Oaks Nursery and Gardens
![petrophytum cinerascens halfshrub Chelan rockmat rock spiraea flower spike inflorescence flower flowers flowering RM Floral Stock Photo - Alamy petrophytum cinerascens halfshrub Chelan rockmat rock spiraea flower spike inflorescence flower flowers flowering RM Floral Stock Photo - Alamy](https://c8.alamy.com/comp/FGAT0Y/petrophytum-cinerascens-halfshrub-chelan-rockmat-rock-spiraea-flower-FGAT0Y.jpg)
petrophytum cinerascens halfshrub Chelan rockmat rock spiraea flower spike inflorescence flower flowers flowering RM Floral Stock Photo - Alamy
![Rock Spiraea: Holodiscus microphyllus var. microphyllus (Synonyms: Holodiscus discolor var. dumosus, Holodiscus dumosus var. dumosus) Rock Spiraea: Holodiscus microphyllus var. microphyllus (Synonyms: Holodiscus discolor var. dumosus, Holodiscus dumosus var. dumosus)](http://science.halleyhosting.com/nature/plants/5petal/rose/holodiscus/microphyllus/microphyllus/microphyllus8e.jpg)