Some plants with interesting chemicals will pop up in all edible categories, but plants used exclu- sively for alcohol, smoking, and drugs will not be featured in this particular exhibit of edible plants. Those should be in a single separate photo exhibit to explain the dangers to health caused by such plants. We would tend to avoid an exhibit focused on alcohol, smoking, and drugs, though we should point out that both the Aztecs, Teotihuacanos, and Maya peoples a thousand+ years ago would have eagerly consumed many of these chemicals via plant parts.