Parsnip (Pastinaca sativa) petiole transverse section

Pastinaca sativa petiole transverse section (mag. 2.5x, zoom 1.5x) Vascular bundles and the mesophyl cells filling the area between them.	Pastinaca sativa petiole transverse section (power 1.0x, mag 1.5x) A single vascular bundle; the darker xylem (lower half) and lighter colored larger celled phloem (upper half) are visible.
Pastinaca sativa petiole transverse section (mag. 2.5x, zoom 1.5x) The epidermal cell layer, a vascular bundle and mesophyl can easily be seen here.