Berberis

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  B. aquifolium

  1a. Leaves pinnately compound with 5–9 leaflets; plants lacking spines; berries blue, glaucous
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  1b. Leaves simple; plants spinose [Fig. 479]; berries red to purple-red, not glaucous
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    B. thunbergii

    2a. Margins of leaves entire; spines simple; inflorescence a solitary flower or an umbel-like cluster of 2–4 flowers; berries rather dry
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    2b. Margins of leaves toothed; some of the spines compound (the upper usually simple in B. koreana); inflorescence a raceme of 10–25 flowers [Fig. 479]; berries fleshy
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      B. vulgaris

      3a. Berry obloid to obloid-ovoid; branchlets gray
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      B. koreana

      3b. Berry subglobose; branchlets red

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 Show photos of:   Each photo represents one species in this genus.