white alder

Alnus rhombifolia

Member of alders (genus Alnus)
birch family (family Betulaceae)
dicots (class Magnoliopsida)
other colors in flowering plants

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• leaf margin generally serrate [small teeth]
• leaf not tightly rolled under

Toxicity of alder tree (Alnus spp.):
1 – Skin contact with these plants can cause symptoms ranging from redness, itching, and rash to painful blisters like skin burns.

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Chris’s observations: 2 (all are research grade)

Locations:

• Sierra Azul OSP
• Stevens Creek CP

Months:

• Jul.: 1
• Aug.: 0
• Sep.: 0
• Oct.: 0
• Nov.: 1

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Taxon info: iNaturalist – Calflora – CalPhotos – Jepson eFlora – FNA

Bay Area species: iNaturalist – Calflora