Camphor (Cinnamomum camphora): traditional external uses, chemotypes, phytochemical profile, contraindications and toxicity warnings, especially for children.

Bay Laurel (Laurus nobilis): traditional uses, tea and essential oil, active compounds, contraindications, and why whole leaves must come out before eating.

Chinese Cinnamon (Cinnamomum cassia): traditional uses, preparation, how it differs from Ceylon cinnamon, and contraindications tied to coumarin and the liver.

Ceylon cinnamon (Cinnamomum verum) is a spice with traditional digestive, antioxidant, and antimicrobial uses. See preparation and cautions here.

Sassafras albidum, the North American sassafras: taxonomy, its three leaf shapes, habitat, cultivation, phenology, phytochemistry, history and conservation.