40+ Berberis X Gladwynensis Pics. Berberis x gladwynensis 'william penn'. Berberis x gladwynensis is a species in the genus berberis which contains between 595 and 798 species and belongs to the family of the berberidaceae (barberry family).
Berberis x gladwynensis 'william penn'.
Berberis × gladwynensis 'william penn'. Thin longated leaves that form a shield. Small bright yellow flowers cover the shrub in spring. Berberis × gladwynensis 'william penn'.
