Contains 4 accepted taxa overall.
Characteristics
Classification
Citation
WISTERIA Nuttall, Gen. N. Amer. Pl. 2: 115. 1818, nom. cons. vs. Phaseoloides Duhamel du Monceau 1755, et vs. Diplonyx Rafinesque 1817.
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TYPE: Wisteria speciosa Nuttall, nom. illegit. Glycine frutescens Linnaeus; Wisteria frutescens (Linnaeus) Poiret)
Species
| Scientific Name | Common Name | Status | Photos |
|---|---|---|---|
| Wisteria floribunda | JAPANESE WISTERIA | Not Native | |
| Wisteria frutescens | AMERICAN WISTERIA | Native FACW (NWPL) | |
| Wisteria sinensis | CHINESE WISTERIA | Not Native Y | |
| Wisteria x formosa | Not Native |
[Family identification key]
1. Vine twining, from the basal lower left ascending distally to the upper right and turning away from the observer and wrapping behind; leaflet apex generally acuminate with an obtuse to subacute tip, margins usually mostly plane; inflorescence with tightly congested flowers; pedicels 5-10(-15) mm long; upper petal reflexed near the middle, the lateral (wing) petals together forming a rounded down-curving hood above the lower (keel) petal; ovary and fruit glabrous; seeds reniform
1. Vine twining in either direction; leaflet apex generally acuminate with an acute to aristate tip, the margin often undulate; inflorescence with somewhat congested to spaced flowers; pedicels 15-20 mm long; upper petal reflexed near the base, the lateral (wing) petals facing each other and shielding the sides of the lower (keel) petal; ovary and fruit pubescent; seeds orbicular
2
2. Vine twining, from the basal lower left ascending distally to the upper right and turning away from the observer and wrapping behind; leaflets (7-)9-11(-13) per leaf; raceme to 35 cm long, the mostly non-fragrant flowers opening nearly simultaneously; corolla 2-2.7 cm long
2. Vine twining, from the basal lower right ascending distally to the upper left and turning away from the observer and wrapping behind; leaflets 7-19 per leaf; raceme to 160 cm long, the fragrant flowers opening nearly simultaneously or sequentially; corolla 1.5-2 cm long
3
3. Leaflets (11-)13-19 per leaf; raceme to 80(160) cm long, the flowers opening sequentially from the base to the tip; auricles of the standard’s callosity 0.7-0.8 mm long
3. Leaflets 7-15(-17) per leaf; racemes to 36 cm long, the flowers opening nearly simultaneously; auricles of the standard’s callosity 0.7-0.8 mm long