Solanum americanum
is a white-flowered Nightshade that grows as a weed in disturbed areas on the
plains. Leaves are wavy margined or shallowly lobed. In fruit, the calyx is reflexed
and does not cover the berry. The flowers of Solanum spp. arise from
the stem in the middle of the internode, which is an unusual characteristic. All
Solanum spp. in eastern Colorado are introduced species.
Compare to Solanum physalifolium,
which has pubescent stems and leaves and a calyx which covers the base of the
fruit.
Compare to Solanum triflorum, which
is also white-flowered but has deeply lobed leaves.
