Aristolochia serpentaria (Virginia snakeroot), Aristolochia reticulata (Texas snakeroot) and in Chinese herbs such as Aristolochia fangchi and Aristolochia mandshurensis (banned in China and withdrawn from Chinese Pharmacopoea 2005; Stephania tetrandra and Magnolia officinalis do not contain aristolochic acid).
age-based rationing. Age-Based Rationing. A proposed form of rationing publicly-funded health care services, in which limits would be placed on the type and amount of such services that would be freely available to persons above a certain age.
Rationing in the United States. 1  Di Natale ration stamps printed, but not used, as a result of the 1973 oil crisis. 2  Henry Segerstrom in front of an automobile with A sticker in windshield. 3  An American child purchases a can of V8, handing the grocer his ration book.