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114. Macroptilium (Bentham) Urban, Symb. Antill. 9: 457. 1928.
大翼豆属 da yi dou shu
Authors: Delin Wu & Mats Thulin
Phaseolus sect. Macroptilium Bentham, Comm. Legum. Gen. 76. 1837.
Erect or climbing herbs. Stipules not produced below point of insertion, strongly striate; stipels similar but smaller; leaves pinnately 3-foliolate. Racemes long, flowers paired or several at nodes of rachis. Bracts sometimes persistent. Calyx tube narrowly campanulate or cylindric; lobes 5, equal or unequal. Corolla white, purplish, violet, or black; standard reflexed, obovate or orbicular, with 2 small reflexed auricles at base; wings large, much longer than standard, very broad, obovate or suborbicular, erect, 2-auricled below base of limb, long clawed, claw partly adnate to staminal tube; keel twisted, long clawed. Stamens diadelphous; vexillary stamen free, remainder connate; anthers uniform. Ovary subsessile, few to many ovuled; style twice ca. 90° incurved, thickened in upper part. Legumes linear, subterete or compressed, straight or falcate. Seeds numerous or few; hilum short.
About 20 species: tropical America; introduced and cultivated elsewhere; two species (both introduced) in China.
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Plants perennial, prostrate; stipules ovate, 4-5 mm; leaflets ovate to rhombic, abaxially silvery tomentose, adaxially pubescent. |
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1 M. atropurpureum |
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Plants annual or biennial, erect, sometimes prostrate or climbing; stipules lanceolate, 5-10 mm; leaflets narrowly elliptic to ovate-lanceolate, abaxially densely pubescent or sparsely pilose, adaxially glabrous. |
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2 M. lathyroides |
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Lower Taxa
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