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Barberry
Berberis nervosa
(Berberidaceae)
From a simple erect stem arises a cluster
of leaves and fascicles of bright yellow flowers. Each leathery
leaf consists of the rachis, or central axis, with prickly
leaflets on either side. When you encounter one along shaded
slopes in conifer forests check the flowers with a hand lens.
You will see six sepals, six petals, and six stamens that
dehisce by two uplifting flaps, all of which surround the
single chambered ovary that matures into a blue berry with
a gray bloom.
DISTRIBUTION: Coniferous forests from NW Calif and the northern
Sierra Nevada to the San Francisco Bay Area and South Coast
Ranges; < 2000 m.
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