Plants suckering, 2–4(–5) m. Leaves: leaflet blades elliptic to widely obovate, 4.5–13 cm, margins serrulate to serrate, apex acuminate, abaxial surfaces ± villous, densely when young, adaxial glabrous or sparsely hairy. Flowers campanulate; sepals pale greenish, greenish pink to pale pink to whitish, 4–7 mm; petals spatulate, 6–8 mm, apex recurved; filaments not or barely exserted, 6–8 mm, equal to or slightly longer than petals, basally villous; pistils villous, styles ± equal to stamens. Capsules obovoid, 3–5 cm. 2n = 72.

Phenology: Flowering Apr–Jun.
Habitat: Deciduous forests, often humid, often at bases of rocky slopes, floodplain woods, thickets, stream banks
Elevation: 0–1000 m

Distribution

Ont., Que., Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Vt., Va., W.Va., Wis.

Discussion

Leaves of Staphylea trifolia are sometimes 5-foliolate.

The relationship of Staphylea trifolia with the northern Mexican S. pringlei S. Watson remains to be determined.

References

None.

Facts about "Staphylea trifolia"

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Author	Luc Brouillet +
Common name	American bladdernut + and staphylier à trois folioles +
Elevation	0–1000 m +
Habitat	Deciduous forests, often humid, often at bases of rocky slopes, floodplain woods, thickets, stream banks +
Illustrator	Marjorie C. Leggitt +
Phenology	Flowering Apr–Jun. +
Reference	None +
Taxon name	Staphylea trifolia +
Taxon parent	Staphylea +
Taxon rank	species +
Volume	Volume 9 +