Sage stem, light micrograph

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Sage stem, light micrograph

Sage stem. Light micrograph of a section through a secondary stem of a scarlet sage (Salivia splendens) plant. The outer stem is covered with a thin epidermis and thick cuticle (red), but is thicker at the four corners forming cork (brown). It also contains stomata, and trichomes. Under the epidermis, at the corners, is a layer of flexible collenchyma (dark red) for support. Next is the cortex (red), with an inner pericycle of parenchyma tissue (brown). Next, the vascular bundles (dark brown and red) consist or rings an outer layer of phloem (dark red) and inner xylem (light and dark brown) tissue, with cambium tissue (light red) in-between. At the centre of the stem is a pith (red) of parenchyma. Magnification: x5 when printed 10 centimetres

Science Photo Library features Science and Medical images including photos and illustrations

Media ID 6340167

© DR KEITH WHEELER/SCIENCE PHOTO LIBRARY

Bundle Cambium Cell Biology Collenchyma Cork Cortex Cuticle Cytological Cytology Dicot Dicots Dicotyledon Dicotyledons Epidermis Histological Histology Layer Layers Microscopy Parenchyma Pericycle Phloem Pith Sage Stain Stained Stomata Structural Structures Tissue Trichome Trichomes Vascular Bundle Vessel Vessels Xylem Cells Light Micrograph Light Microscope Scarlet Sage Section Sectioned

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