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FOC | Family List | FOC Vol. 10 | Fabaceae

75. Wisteria Nuttall, Gen. N. Amer. Pl. 2: 115. 1818.

紫藤属 zi teng shu

Authors: Zhi Wei & Les Pedley

Phaseoloides Duhamel; Rehsonia Stritch.

Lianas, deciduous. Winter buds ovoid; scales 3-5. Stipules present. Leaves imparipinnate; leaflet blades opposite, margin entire; stipels present. Racemes terminal, elongate, pendulous; nodes scattered on rachis, with 1 flower. Flowers 1.5-2.5 cm. Corolla stan­dard orbicular, large, reflexed, glabrous or outside with some trichomes at base, with 2 basal calluses; wings free from keel. Stamens diadelphous; vexillary stamen distinct from other 9 or slightly connate at middle of sheath. Ovary stipitate, with trichomes, with 5-16 ovules. Legume linear to oblanceolate, leathery, convex over seeds. Seeds 1-3[or more] per legume, reniform to lenticular, without a strophiole; radicle folded.

About six species: E Asia, North America; four species (three endemic) in China.

The Japanese species Wisteria floribunda (Willdenow) Candolle is commonly cultivated as a garden plant in China.

1 Mature leaflet blades glabrescent or with sparse trichomes; corolla purple, occasionally white   (2)
+ Mature leaflet blades with trichomes on both surfaces but abaxially especially dense; corolla violet or white   (3)
2 (1) Flowers 2-2.5 cm; pedicel 2-3 cm; corolla standard glabrous, apex truncate; abaxial calyx tooth longer than others.   1 W. sinensis
+ Flowers ca. 1.5 cm; pedicel 0.6-1.2 cm; corolla standard outside sparsely villous, apex emarginate; abaxial calyx tooth as long as others.   2 W. brevidentata
3 (1) Racemes 30-35 cm, densely gray villous; flowers 2.2-2.5 cm, blooming in sequence from base to apex along raceme rachis; corolla violet; leaflet blades villous but abaxially especially dense.   3 W. villosa
+ Racemes 10-20 cm, yellow tomentose; flowers ca. 2 cm, blooming almost at same time along whole raceme rachis; corolla white; leaflet blades abaxially sericeous, adaxially appressed pubescent.   4 W. venusta

Lower Taxa


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