Trees of Wisconsin

Staphylea trifolia L.
American bladdernut
Family: Staphyleaceae
tree branch flowers fruit bud bark
Staphylea trifolia is a large shrub or small tree with opposite, trifoliate leaves (compound leaves with 3 leaflets). The small, white flowers mature to produce a highly distinctive inflated, papery capsule containing several large seeds which, at maturity, can be induced to "rattle" by shaking the fruit. Capsules are relatively large, with length mostly in the 1-2 inch range.

Staphylea trifolia is near its northwestern range limit in Wisconsin and most records are from the southwestern part of the state. There are several records from Brown County, one from Oconto County and a few along the Mississippi river north to Burnett County. It is not common

known Wisconsin distribution


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