FIGURE 3 in Re-establishment of Begonia corallina Carrière (Begoniaceae) based on morphoanatomical evidence

FIGURE 3. Petiole cross section of Begonia corallina (A and C) and Begonia maculata (B and D). A-B. Overview of the petiole, showing epidermis (Ep), cortex (Ct) formed by collenchyma and parenchyma, vascular bundles (Vb) and parenchymal pith (Pi). C. Detail showing epidermis (Ep) with thick outer periclinal walls, collenchyma (Co) with thickened primary cell wall and dense contents. D. Detail of rounded epidermal cells (Ep) and narrow collenchyma (Co) with dense content. Bars: A = 30 µm, B = 300 µm, C = 40 µm, D = 60 µm.