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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.
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| 1 |
Mature leaflet blades glabrescent or with sparse trichomes; corolla purple, occasionally white |
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(2) |
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Mature leaflet blades with trichomes on both surfaces but abaxially especially dense; corolla violet or white |
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(3) |
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| 2 (1) |
Flowers 2-2.5 cm; pedicel 2-3 cm; corolla standard glabrous, apex truncate; abaxial calyx tooth longer than others. |
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1 W. sinensis |
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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. |
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2 W. brevidentata |
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| 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. |
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3 W. villosa |
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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. |
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4 W. venusta |
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
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