Search results SearchResult 1 of 1Content pagesMultimediaEverythingAdvanced Spiraea alba (category Spiraea) commonly naturalized as S. ×rosalba Dippel (S. alba × S. salicifolia), or as S. ×billardii Hortus ex K. Koch (S. alba × S. douglasii) (A. J. Silverside 1990) 5 KB (580 words) - 19:08, 6 November 2020