Section through stem of a horsetail

Section through stem of a horsetail

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Credit: RICHARD KIRBY, DAVID SPEARS LTD/ SCIENCE PHOTO LIBRARY

Caption: Light micrograph of a transverse section through the stem of a horsetail, Equisetum sp. The stem displays a prominent central cavity and a ring of eight large cavities lying within the outer layer of tissue, the cortex. A ring of eight vascular bundles is also visible surrounding the central cavity. Magnification: x6 at 35mm size.

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Keywords: botany, equisetum sp., horsetail, light micrograph, nature, plant, pteridophyte, pteridophytes, stem of

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