Tall Oregon grape

Description:

Mahonia aquifolium grows to 1–2 m (3 ft 3 in–6 ft 7 in) tall by 1.5 m (5 ft) wide, with pinnate leaves up to 30 cm (12 in) long, each leaf made up of spiny leaflets. The leathery leaves resemble holly and the stems and twigs have a thickened, corky appearance. The flowers, borne in dense clusters in late spring, are yellow, and are followed by spherical dark dusty blue berries, which give rise to the common name "Oregon grape".

Notes:

Certain extracts from Mahonia aquifolium may be useful in the treatment of inflammatory skin diseases such as psoriasis,[20][21][22] although side effects include rash and a burning sensation when applied.