Mahonia nervosa wani nau'in tsiro ne wanda ya fito daga yammacin Arewacin Amurka. Yana cikin dangin Berberidaceae kuma an fi sani da Cascade Oregon innabi ko mahonia longleaf. Yawanci yana girma a cikin dazuzzukan dazuzzuka kuma yana da ganyaye masu kama da holly masu duhu kore da sheki. Itacen yana samar da ƙananan furanni masu launin rawaya a cikin bazara, sannan kuma berries blue-black a lokacin rani. Bawon da tushen Mahonia nervosa a tarihi ’yan asalin ƙasar suna amfani da shi don dalilai na magani.