Fig. 5
From: Profiling the cell walls of seagrasses from A (Amphibolis) to Z (Zostera)
Micrographs of Z. marina rhizome and Mentha x piperita stem sections after staining with different methods to detect lignin. Zostera: S: central stele (central cylinder); C: cortex; Cv: cortical vascular bundle; En: endodermis; Ep: Epidermis. Mentha: X: xylem; P: phloem. a: Unstained cross section of Z. marina rhizome with central stele. A small vascular bundle is located within the black frame. b: Enlargement of unstained small vascular bundle of Z. marina. Three different staining methods for Z. marina (left) and Mentha x piperita with lignified xylem (right). c +d: Mäule-staining. e + f: Wiesner-staining. g + h: Safranin-astra blue staining