oregon grape

Berberis aquifolium

Member of barberries (genus Berberis)
barberry family (family Berberidaceae)
dicots (class Magnoliopsida)
yellow in flowering plants

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• compound leaves
• usually 5–9 leaflets, ± pinnately veined
• leaflet margin wavy, ± thin, not hard
• 12–24 spines per side, 1–2 mm
• Jepson doesn’t provide a reliable way to distinguish this from california barberry (Berberis pinnata)

Toxicity of oregon grape or oregon holly (Mahonia aquifolium):
0 – Non-toxic.
A higher-level taxon has differing toxicity.

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Chris’s observations: 1 (none are research grade)

Locations:

• Sweeney Ridge National Recreation Area

Months:

• Apr.: 1

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Not all sites agree about the scientific name:

• Berberis aquifolium → iNaturalist – FNA
• Berberis aquifolium var. aquifolium → Calflora – CalPhotos – Jepson eFlora

Bay Area species: iNaturalist – Calflora