【來源】菊科白腳威靈Vernonia squarrosa (D. Don) Less. var. orientalis Kitam.[V. teres auct. non DC.],以根入藥。【生境分佈】雲南、貴州。【性味】苦、辛,微寒。【功能主治】健脾消食,止痛,除溼,消炎。主治消化不良,腹脹悶,風溼關節痛,偏頭痛,瘡癤。用量0.3~1兩。據報道還可治食道癌,胃癌。研粉沖服,每次1~2錢,日2~3次。【摘錄】《全國中草藥彙編》