| Name | Berberis insignis subsp. incrassata (Ahrendt) Chamberlain | 
| Authorship | (Ahrendt) Chamberlain | 
| Rank | Subspecies | 
| NomenclaturalStatus | NomLeg | 
| Placed in | Berberis insignis Hooker f. & Thomson | 
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Berberis insignis subsp. incrassata (Ahrendt) Chamberlain | 
| Identification made in | [no date] (2), 1995 (2), 1996 (2) |