Smithsonian National Museum of Natural History  
Lewis and Clark as Naturalists
<em>Sambucus nigra </em>L. ssp. <em>caerulea </em>(Raf.) R.Bolli - Sambucus nigra ssp. caerulea (M. Rivers Smith)

Sambucus nigra ssp. caerulea (M. Rivers Smith)
(Photo © Marcia Rivers Smith)
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