乌头(见图1)是一种直立多年生草本植物,生活在山地、丘陵草坡或灌木丛中。它的叶子呈手掌状,蓝紫色的花朵在每年秋季开放。 乌头具有药用的部分是它的块根。它的块根黑褐色,呈胡萝卜状。块根旁又生出较小的块根,就 Aconitum (see Figure 1) is an erect perennial herb that lives in mountains, hills, grasslands, or bushes. Its leaves are palm-shaped and blue-purple flowers open every autumn. The medicinal part of Aconitum is its roots. Its dark brown roots are carrot-like. The roots next to the roots gave birth to smaller roots.