Morphology of the two sections of the Asian Cinnamomum A–C Cinnamomum camphora of sect. Camphora A perulate terminal buds B branch portion displaying the alternate leaf arrangement C a leaf showing the pinnate venation and the domatia in axils of lateral veins D, E Cinnamomum japonicum of sect. Cinnamomum D terminal buds lacking helically arranged scales E branch portion exhibiting the subopposite leaf arrangement F a leaf displaying the tripliveined venation and the absence of domatia in axils of lateral veins.