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Alisma plantago-aquatica petiole

Alisma plantago-aquatica petiole

C024/9262

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Credit

DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY

Caption

Common water-plantain (Alisma plantago-aquatica petiole) petiole. Light micrograph of a section through a petiole (leaf stalk) from a water-plantain plant. Seen here are the: epidermis with a thin cuticle; outer cortex consisting of three layers of parenchyma cells; middle cortex with large air space (lacuna) and radial strands of parenchyma; inner cortex. Five large vascular bundles can also be seen (dark patches). The outer ring of each is the endodermis, beneath this is a ring of phloem, then a ring of xylem, with the pith at the centre. Magnification: x6 when printed 10 centimetres wide.

Release details

Model release not required. Property release not required.

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