目前为止，中国西南野生生物种质资源库共保藏该物种: 种子41份; DNA材料429份; DNA9份;

• 科:豆科    Fabaceae
• 属:冬麻豆属   Salweenia
• 种:冬麻豆   Salweenia wardii

1. Salweenia wardii E. G. Baker, J. Bot. 73: 135. 1935. 冬麻豆 dong ma dou Salweenia wardiiCredit: Harvard University Herbaria Stems erect, greenish yellow to dark brown. Young branches longitudinally ridged when dry, densely appressed gray-whitish villous; bud scales triangular, apex acute to tapering, persistent. Leaves 1.2-3 cm; stipules triangular, 1-2 mm, appressed gray-white villous, persistent; petiole and rachis appressed gray-white villous, grooved above; leaflets 7-19, ses­sile, 1-2.7 × 0.2-0.35 cm, straight to curved, densely appressed adnate gray-whitish pubescent, becoming glabrate adaxially, lateral veins inconspicuous, margin entire, apex acute or blunt. Flowers 3-7, clustered at end of branchlets; bracts persistent, ovate-triangular, 3-5 mm, appressed gray-whitish villous abax­ially, glabrous adaxially, apex acute; pedicels 5-7 mm, appressed gray-whitish pubescent; bractlets 2, acicular, 2-3 mm. Calyx campanulate, 8-9 mm; teeth 1-2 mm, appressed gray-whitish pubescent. Corolla yellow; standard obovate to broadly ovate, 1.6-1.8 × 1.3-1.5 cm, apex emarginate; wings oblong, 11-12 × 4-5 mm, claw 7.5-8 mm; keel boat-shaped, 11-12 mm, claw 7.5-8 mm. Stamen filaments 1.4-1.8 cm. Ovary densely appressed villous; carpopodium 4-6 mm; ovules 6-8. Legumes linear-oblong, 5.5-9 × 0.8-1.2 cm, apex beaked; stalk 6-8 mm, densely appressed gray-whitish villous; calyx persis­tent; segments brittle, sparsely appressed pubescent. Seeds 3-7; funicle slender, 0.8-1 mm.● Dry shrublands or gravelly slopes in valleys of Lancang Jiang, Nu Jiang, and Yalong Jiang; 2700-3600 m. W Sichuan (Jiulong), E Xizang.【引自：Flora of China】

常绿灌木，高0.5-2米。茎直立，绿黄色，1-2年生菠枝干时具纵棱及沟槽，密被灰白色长柔毛；芽鳞三角形，先端锐尖至渐尖，宿存。羽状复叶长1.2-3厘米；叶柄与叶轴均被灰白色长柔毛，叶轴上面具沟槽；托叶三角形，长1-2毫米，被灰白色长柔毛，宿存；小叶3-7（-9）对，贝合状，线形至线状倒披针形，长1-2.7厘米，宽2-3.5毫米，先端急尖或钝形，全缘，内卷，幼时两面密被灰白色平伏短柔毛，后上面渐脱落至无毛，侧脉不明显；无小叶柄。花3-7朵簇生于小枝顶端；苞片卵状三角形，长3-5毫米，锐尖，上面无毛，下面被灰白色长柔毛，宿存；花梗长5-7毫米，被灰白色柔毛；小苞片2枚，针状，长2一3毫米；花萼钟状，长8-9毫米，萼齿5，三角形，长1-2毫米，齿端被灰白色细柔毛；花冠黄色，旗瓣倒卵形至阔倒卵形，长16-18毫米，宽13-15毫米，先端微凹，翼瓣长圆形，长约12毫米，宽约5毫米，瓣柄长约8毫米，龙骨瓣舟状，长约11毫米，基部具柄，长约8毫米；雄蕊二体；花丝长14-18毫米；子房密被长柔毛，基部具柄，胚珠8粒。荚果线状长圆形，长5.5-9厘米，宽8-12毫米，先端具喙状尖头，果颈密被灰白色柔毛，长约6毫米，果瓣纸质，皱波状，外被疏柔毛，花萼宿存，有种子5-7粒；种子近心形，压扁，种脐处具1凹缺，有细长珠柄，长约1毫米。【引自：中国植物志】