Black nightshade (Solanum nigrum)

Second-leaf black nightshade seedling. The two, long, pointed-tip ‘leaves’ are the cotyledons.

Black nightshade seedling. Note the long, pointed-tip cotyledons and the purplish color that can

develop. True leaves are more triangular shaped. Leaves are hairy and have smooth margins.

Black nightshade seedling. True leaves are more triangular shaped. Leaves are hairy and have smooth

margins. Leaves can become dark green in color.

Black nightshade plant. Older leaves are more triangular shaped with shallow toothed margins. Leaves

can become dark green in color. Flowers resemble those of tomatoes. Mature fruits are purple in color

and approximately pea-sized.