Staphylea trifolia L.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Erect shrub to 5 m, with striped bark; lvs long-petioled, 3-foliolate, the lfls oblong to elliptic or ovate, 5–10 cm, serrate, the terminal one long-stalked, the lateral sessile or short- stalked and often oblique at base; infls 4–10 cm (peduncle included); fls long-pedicellate, greenish- white, campanulate, 8–10 mm; fr 3-lobed, 5 cm; 2n=78. Moist woods and thickets; s. Que. to Minn., s. to Ga., w. Fla., and Okla. May.