Bladdernut

Classification:

Family:  Staphyleaceae
Genus, species:  Staphylea trifolia 

Leaves:
Leaves are compound with three leaflets. Each leaflet is up to 4 inches long, 2 inches wide. Leaves are bright green.

Flowers:
Flowers are white.

Fruit:
Fruit is bladder-like, inflated, shaped like a teardrop, contains several large black seeds.

Photos: