Tomatillo (annual ground cherry)
Physalis ixocarpa

Seed leaves are egg-shaped and pale green. The first two true leaves are oval but subsequent leaves are egg-shaped with notched, wavy margins.
Mature plants are erect, up to 1 m tall with irregularly toothed leaf margins.
Flowers are creamy yellow.
Ripe fruit is a yellow, gooseberry-like berry with a papery husk.
Very similar to wild gooseberry, except berry stalks about 10 mm long, papery husk of fruit is circular in cross-section and the berry is slightly sticky.

The tomatillo has a flavor that is tart, tasting something like green apples, rather than sweet like its close relative the husk-tomato (or ground-cherry).