An adventure in plants, their appearance, and their taxonomic status.
It starts with a recent visit to the Gamble Garden in Palo Alto, where I encountered this pretty small shrub, in bloom, labeled Mahonia ‘Sweet Caress’ (photo from the net):
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At first glance, not at all like the mahonia shrub my father grew in our garden when I was a teenager: this plant has bamboo-like foliage, but the mahonia in our Wyomissing Hills PA garden had leaves that looked like holly leaves, and my dad referred to it as an Oregon grape holly: grape for the blue berries on the plant during the winter, holly for the prickly Ilex-like leaves, and Oregon for its origin in the shady forests of the Pacific Northwest.
Now it turns out that the holly-leaved mahonia of my youth and the bamboo-leaved mahonia in Gamble Garden are shade-loving evergreen plants with similar yellow flowers and blue berries, and are in fact both in the genus Mahonia, very closely related to barberries (in the genus Berberis). Both Mahonia and Berberis are in the barberry family (Berberidaceae) — with nothing much taxonomically to do with either hollies (in their own plant family, Aquifoliaceae) or bamboos (in the grass family, Poaceae).
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