Sambucus mexicana C.Presl ex DC., Prodr. 4: 322 (1830) (syn: Sambucus bipinnata Schltdl. & Cham. ; Sambucus canadensis var. mexicana (C.Presl ex DC.) Sarg.; Sambucus cerulea var. mexicana (C.Presl ex DC.) L.D.Benson; Sambucus mexicana var. bipinnata Schwer. ; Sambucus mexicana f. caudata Schwer. ; Sambucus mexicana var. plantierensis Schwer. ; Sambucus mexicana var. typica Schwer.);
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SW. U.S.A. to New Mexico and Mexico (Sonora, Chihuahua): Arizona, California, Mexico Northeast, Mexico Northwest, Nevada, New Mexico, Utah; Introduced into: Bolivia, Brazil North, Cameroon, Caroline Is., Colombia, DR Congo, Ecuador, Ethiopia, Gabon, Galápagos, Hawaii, Marianas, Marshall Is., Peru, Rwanda, Thailand, Venezuela, Zimbabwe as per POWO;
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Sambucus canadensis from California for Validation-GS04082025-1: 4 high res. image.
Sambucus mexicana for validation from California-GS04082025-1
Sambucus mexicana photographed from Fremont, California, would be interesting to compare with S. canadensis, both look very similar.
Yes, as per POWO Calscape Calflora
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References:
POWO Catalogue of Life Wikipedia Useful Tropical Plants Calscape Calflora