Fig. 4.1-5. Transverse section of parsnip (Pastinaca). The collenchyma here is located in a columnar mass that appears round in transverse section. This collenchyma does not extend to the epidermis itself, but instead stops about one cell layer interior to the hypodermis (the larger cells just interior to the epidermis). Also, this bundle of collenchyma is aligned with a vascular bundle (near the bottom of the micrograph). The collenchyma cells are shown in higher magnification in Fig. 4.1-6.