Wisteria frutescens
Tabl. Encyl. 3: 674. 1823.
Stems twining counterclockwise. Leaves: leaflets 9–15, blades elliptic to lanceolate, 6 × 3 cm. Racemes 5–15(–22) cm; anthesis gradual. Pedicels 0.5–0.8 cm. Flowers appearing after leaves, unscented; calyx middle lobe of abaxial lip to 3 mm; corolla usually azure or purple, rarely white, 1.5–2 cm; banner 1.7–1.8 × 1.4–1.5 cm, reflexed at middle, apex rounded, auricles of median callosity 0.7–0.8 mm; wings 1.7–1.8 × 0.6 cm; keel 1.2–1.3 × 0.6–0.7 cm; ovary glabrous. Legumes plump, linear-oblong, 5–12(–15) cm, explosively dehiscent, glabrous, endocarp not readily separable from exocarp. Seeds plump, reniform. 2n = 16.
Phenology: Flowering Apr–Jun.
Habitat: Bottomland forests, riverbanks, stream banks, bayheads.
Elevation: 0–300 m.
Distribution
Ala., Ark., Conn., Fla., Ga., Ill., Ind., Kans., Ky., La., Mass., Mich., Miss., Mo., N.J., N.Y., N.C., Ohio, Pa., S.C., Tenn., Tex., Va., W.Va.
Discussion
Selected References
None.