Piper's Barberry, Piper's Oregon Grape
Berberis piperiana
Synonym: Mahonia piperiana
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Piper's Oregon grape observed in bloom at Days Gulch Botanical Area, Rogue River-Siskiyou National Forest.......April 21, 2021.
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Piper's Oregon grape observed in bloom at Days Gulch Botanical Area, Rogue River-Siskiyou National Forest.......April 6, 2022.
Paul Slichter