Fluorescence light micrograph of a transverse section through the petiole of a Ctenanthe setosa plant showing vascular bundles (red). Vascular bundles are composed of xylem and phloem tissues, which transport water and carbohydrates around the plant respectively. As usual in monocotyledonous plants, the vascular bundles are distributed in the parenchyma. Magnification: x300 when printed at 10 x 10 centimetres.