Solanum torreyi Solanum dimidiatum is a species of plant in the family Solanaceae known by the common names western horsenettle,[1] Torrey's nightshade, and robust horsenettle.

It is native to the central United States, where it grows in many types of habitat, including disturbed areas.

[2] It is a rhizomatous perennial herb producing an erect stem up to 80 centimeters tall.

The leaves may be up to 15 centimeters long, their edges wavy to lobed and sometimes toothed.

The specific epithet "dimidiatum" comes from Latin, meaning halved.