Staphylea trifolia bladder-nut Staphyleaceae STTR; Bx, pb, vc; NY, hb, iw; R cr (U. Lorimer 2017);

Staphylea .© Copyright Bobby Hattaway

Staphylea .© Copyright Bobby Hattaway (Accessed 5/2015).

Staphylea trifolia is a shrub to 5 m, stems erect, bark gr eenish-striped. 

Leaves opposite, 3-parted, leaflets oblong, elliptic or egg-shaped, to 1- cm long, margin toothed, terminal leaflet long-stalked, stalks of lateral leaflets short to none. 

Flowers greenish-white, bell-shaped, to 1 cm long, calyx petal-like, nearly as long as petals; inflorescence of drooping clusters to 10 cm long; blooms May. 

Staphylea_trifolia.© Copyright Bobby Hattaway

Staphylea trifolia. fruit.© Copyright Bobby Hattaway (Accessed 5/2015).

Fruit dry, an inflated, thin-walled 3-parted capsule to 5 cm long, splitting open at top to release seeds. 

Wetland status: FAC. 

Frequency in NYC: Infrequent. 

Origin: Native. 

Habitat: Moist woods and edges in rich, often rocky soil, pH 6-8. Tolerant of shade. Moderately tolerant of drought, flooding (Hightshoe 1988).