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111. Dolichos Linnaeus, Sp. Pl. 2: 725. 1753.
镰扁豆属 lian bian dou shu
Authors: Delin Wu & Mats Thulin
Herbs or shrubs, erect, climbing or prostrate, sometimes with carrotlike woody rhizomes. Leaves pinnately 3-foliolate, subdigitate, or 1-foliolate; stipules basifixed; stipels present. Racemes axillary or terminal, sometimes subumbellate, or flowers solitary, axillary. Calyx 5-toothed, 2-lipped, upper lip entire or bifid, lower lip 3-toothed. Corolla white or purple; petals clawed; standard suborbicular, often with inflexed auricles and appendages at base; wings obovate or oblong, ± adherent to keel; keel incurved, often beaked but not twisted. Vexillary stamen free, remainder connate into an open sheath; anthers uniform. Ovary 3-12-ovuled; disk present; style swollen and ± twisted toward base or narrowed from base to tip, glabrous or shortly pubescent all over, or with a ring of hairs around terminal capitate stigma. Legumes straight or arcuate, flattened, not septate. Seeds ± flattened, arillate or strophiolate; hilum short, usually central.
About 60 species: distributed in Africa and Asia; four species in China.
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| 1 |
Leaves glabrous or almost so on both surfaces. |
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1 D. trilobus |
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Leaves hairy on both surfaces or abaxially |
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(2) |
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| 2 (1) |
Standard up to 1.2 cm. |
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2 D. tenuicaulis |
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Standard 1.5 cm or more |
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(3) |
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| 3 (2) |
Leaflets ovate-rhombic, 6-7 × 4-6 cm, apex acuminate and apiculate; corolla white with purple striae. |
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3 D. thorelii |
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Leaflets broadly rhombic-ovate or ovate, 10-11 × 9-9.5 cm, apex acute or slightly obtuse; corolla purple. |
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4 D. junghuhnianus |
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Lower Taxa
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