| Name | Berberis concinna var. extensiflora Ahrendt |
| Authorship | Ahrendt |
| Rank | Variety |
| Placed in | Berberis concinna Hooker f. |
| Citation | 1961 J. Linn. Soc., Bot. 57: 119 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Berberis concinna var. extensiflora Ahrendt |
| Identification made in | [no date] (1), 2021 (1) |
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