Dicot Herbaceous Stem Section (Heliantus annus) (2984) This model, enlarged 300X life size, illustrates a dicot vascular structure. Longitudinally and cross sectioned, it shows clearly significant elements of the tegumental and cortical zone. The central vascular cylinder, including phloem and xylem, is represented in great detail. All different structures are displayed in different color. Size: 42,5x29x9 cm Weight: approx. 2500 g Qty :