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植物学特征牛蒡株高1～2米。根粗大,主根肉质,圆锥状或棍棒状,直向下伸展,粗8厘米,长50厘米以上。茎粗壮,直立,上部分枝多,表面有纵沟,密被较短柔毛。叶片肥厚,呈心形或宽卵形,先端钝尖或急尖。叶长40～50厘米,宽30～40厘米,叶面绿
Botanical characteristics Burdock plant height of 1 to 2 meters. Roots thick, the main root fleshy, conical or stick-shaped, straight down, coarse 8 cm, 50 cm long and above. Stems stout, erect, many branched at upper, with longitudinal grooves on surface, densely pubescent. Leaf blade hypertrophy, was heart-shaped or broadly ovate, apex obtuse or acute tip. Leaves 40 to 50 cm long, 30 to 40 cm wide, green leaves