一、形态特征甘肃棘豆(Oxytropis kansuensis)为多年生草本豆科植物,株高10～30厘米,基部有分枝,疏生白色长柔毛,间有黑色短柔毛。羽状复叶,长5～10厘米;托叶呈卵状披针形,基部连合,与叶柄分离;小叶13～25枚,卵状矩园形至披针形,长8～20厘米,宽4～6毫米,先端渐尖,基部园形,两面均具柔毛。总状花序近头状,总花梗具白色间黑色长柔毛;花萼筒状,密生黑色间有白色长柔毛;花冠黄色,长约12毫米。荚 I. Morphological characteristics Oxytropis kansuensis is a perennial herbaceous legume with a plant height of 10-30 cm, branches at the base, sparsely white villous, and black pubescent. Pinnate compound leaves, 5–10 cm long; stipules ovate-lanceolate, basally commissure united, detached from petiole; lobule 13–25, ovate-oblong to lanceolate, 8–20 cm long, It is 4 to 6 mm wide, apex acuminate, base basally, pilose on both surfaces. Inflorescences nearly head-shaped, with peduncles white and black villous; calyx tubular, densely black with white villous; corolla yellow, ca. 12 mm. pod