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DESCRIPTION:
Most of the common nightshades are annuals. The worst of the nightshades are black nightshade
(S. nigrum) and hairy nightshade (S. sarrachoides).
Black nightshade plants vary greatly in form and color. Seed leaves of black nightshade
are elongate-oval and pointed; the first true leaves are spade-shaped with smooth edges. Lower
surfaces are often purple. Berries turn from green to black when mature and the calyx covers
only a small part of the fruit surface. Petioles, stems, and leaves have some hairs but are not
densely hairy or sticky.
Broadleaf ID illustration.
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