美洲防风是以肉质根供食用的蔬菜,别名芹菜萝卜、蒲芹萝卜。伞形花科,欧防风属中能形成肥大肉质根的二年生草本植物。根为肥大的肉质根,长圆锥形,近似胡萝卜,长约40cm。根皮浅黄色,肉白色,肉质细嫩,顶部粗4～5cm。薹茎二歧分枝,株高70cm 左右。叶为二回羽状复叶,形似芹菜,小叶卵形,叶片深绿色,叶缘浅裂。叶柄长大,长13～15cm,基部略带紫色。初夏抽薹,6～7月份开花,复伞状花序,花朵小,花冠白色。果实为阔卵形,扁 American wind is fleshy root for food, alias celery radish, Pa Qin radish. Umbelliferae, the European anti-wind is able to form a hypertrophic fleshy root of biennial herbs. Root hypertrophy fleshy root, long conical, approximate carrot, about 40cm. Light yellow root bark, white meat, tender meat, the top coarse 4 ~ 5cm. Sesamum stem bifurcation, height about 70cm. Leaves for the two back pinnate, shaped like celery, leaflets ovate, dark green leaves, leaf margin lobed. Petiole grow up, length 13 ~ 15cm, slightly purple base. Early summer bolting, flowering from June to July, complex umbrella, small flowers, corolla white. Fruit broadly oval, flat