紫花大翼豆Macroptilium atropurpureum

中文名(Chinese Name):紫花大翼豆
学名(Scientific Name):Macroptilium atropurpureum (Moc. & Sessé ex DC.) Urb.
英文名(English Common Name):purple bushbean
别名(Chinese Common Name):
异名(Synonym):Phaseolus affinis Piper  Phaseolus semierectus var. atropurpureus (Moc. et Sessé ex DC.) M. Gomez  Phaseolus vestitus Hook.  Phaseolus schiedeanus Schltdl.  Phaseolus atropurpureus var. canescens (M. Martens et Galeotii) Hassl.  Phaseolus atropurpureus var. ecuadoriensis Hassl.  Phaseolus atropurpureus var. pseuderythroloma Hassl.  Phaseolus atropurpureus var. vestitus (Hook.) Hassl.  Phaseolus canescens M. Martens et Galeotii  Phaseolus dysophyllus Benth.  Phaseolus atropurpureus var. sericeus A. Gray
科属(Family & Genus):蝶形花科,Fabaceae大翼豆属
形态特征(Description):多年生蔓生草本。根茎深入土层;茎被短柔毛或茸毛,逐节生根。羽状复叶具3小叶;托叶卵形,长4-5毫米,被长柔毛,脉显露;小叶卵形至菱形,长1.5-7厘米,宽1.3-5厘米,有时具裂片,侧生小叶偏斜,外侧具裂片,先端钝或急尖,基部圆形,上面被短柔毛,下面被银色茸毛;叶柄长0.5-5厘米。花序轴长1-8厘米,总花梗长10-25厘米;花萼钟状,长约5毫米,被白色长柔毛,具5齿;花冠深紫色,旗瓣长1.5-2厘米,具长瓣柄。荚果线形,长5-9厘米,宽不逾3毫米,顶端具喙尖,具种子12-15颗;种子长圆状椭圆形,长4毫米,具棕色及黑色大理石花纹,具凹痕。
分布(Distribution):原产热带美洲,现世界上热带、亚热带许多地区均有栽培或已在当地归化。
用途(Use):热带地区的高产牧草,抗旱、耐放牧,有良好的固氮作用,适应土壤的范围广,产种子多;叶含丰富的蛋白质,适口性好。
引自植物志英文版FOC Vol. 10 Page 260      
Macroptilium atropurpureum (Mociño & Sessé ex Can­dolle) Urban, Symb. Antill. 9: 457. 1928.
紫花大翼豆 zi hua da yi dou | Fabaceae  | Macroptilium
Phaseolus atropurpureus Mociño & Sessé ex Candolle, Prodr. 2: 395. 1825.
Perennial prostrate herbs, sometimes rooting at nodes. Stems pubescent or tomentose. Stipules ovate, 4-5 mm, pilose; petiole 0.5-5 cm; leaflets ovate to rhombic, 1.5-7 × 1.3-5 cm, sometimes lobed, lateral ones oblique, lobed on outer side, abaxially silvery tomentose, adaxially pubescent, base rounded, apex obtuse or acute. Inflorescences with peduncle 10-25 cm and rachis 1-8 cm. Calyx campanulate, ca. 6 mm, white pilose. Corolla deeply blackish purple; standard 1.5-2 cm, with long claw. Legumes linear, 5-9 cm × ca. 4 mm, apex rostrate, 12-15-seeded. Seeds marbled with brown and black striae, oblong-elliptic, ca. 4 mm.
Cultivated. Guangdong, Taiwan (also naturalized) [native to tropi­cal America; widely cultivated and naturalized in the tropics].
This species is used for forage.
紫花大翼豆Macroptilium atropurpureum

紫花大翼豆Macroptilium atropurpureum

紫花大翼豆Macroptilium atropurpureum(责任编辑:徐晔春)

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