By number, order the following five cell layers in a non-woody eudicot [yoo-DY-kot] stem from most lateral to most medial: 1) epidermis [ep-i-DER-mis], 2) vascular cambium [KAM-bee-uhm], 3) pith, 4) primary phloem [FLOH-em], 5) primary xylem [ZY-luhm].