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Snapshots of the taxonomy

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As classified in WFO snapshot

December 2022

Warning: older classification

subspecies

Physocarpus alternans subsp. annulatus J.T.Howell

This subspecies name was first published in Proc. Calif. Acad. Sci. , ser. 4, 20: 133 (1931) Link to external nomenclature reference

This subspecies name has been reclassified since this snapshot. Its current preferred usage is a synonym .