High Quality Content by WIKIPEDIA articles! Physalis crassifolia is a species of flowering plant in the nightshade family known by the common name yellow nightshade groundcherry. It is native to the southwestern United States and northern Mexico, where it can be found in rocky, dry desert and mountain habitat. This is a perennial herb producing a ridged, angular, branching stem approaching 80 centimeters long, taking a clumped, matted, or erect form. The fleshy oval leaves are 1 to 3 centimeters long and have smooth, wavy, or bluntly toothed edges. The herbage is glandular and coated in short hairs. The yellow flowers growing from the leaf axils are widely bell-shaped, vaguely five-lobed, and around 2 centimeters wide. The star-shaped calyx of sepals at the base of the flower enlarges as the fruit develops, becoming an inflated, angled lanternlike structure about 2 centimeters long which contains the berry.