Figure 10.2–Longitudinal sections of stem tips of Arceuthobium globosum (A-B) and transverse sections of leaves of A. tsugense (C-E). A: shoot tip showing meristem and leaf primordia, x40. B: apical meristem, periclinal divisions in subepidermal layer at unlabeled arrows, x100. C-E: leaves at successive stages of maturation, showing xylem elements at unlabeled arrows, rhomboidal crystals (c), guard cells (g), subsidiary cell (s), and sclerified parenchyma (sp), x250.