Physalis viscosa is a species of flowering plant in the nightshade family known by many common names, including starhair groundcherry,[1] stellate ground-cherry[2] and grape groundcherry in English, and arrebenta-cavalo, balãozinho, and camambú in Portuguese and Spanish (from Guaraní akamambu, «blister»).

This is a rhizomatous perennial herb producing hairy stem up to about 40 centimeters in maximum height.

The calyx of sepals at the base of the flower enlarges as the fruit develops, becoming an inflated, ribbed, lanternlike structure 2 to 3 centimeters long which contains the berry.

The nutritional and medicinal use of P. viscosa has been documented in widespread areas of Bolivia, eastern Paraguay.

Migrants to the region including Anglican missionaries from England and Mennonite settlers fleeing persecution make cooked and baked dishes from Physalis viscosa.