Tinted SEM of Pinus sylvestris wood.

Tinted SEM of Pinus sylvestris wood.

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Caption: False-colour scanning electron micrograph of the wood (secondary xylem) of the Scots pine, Pinus sylvestris, showing both vertical (bottom) & horizontal (top) cut surfaces. The large-celled wood at right is early (spring) growth; the late wood (left) has small, thick-walled cells and is much denser. The vertical tube-like structures seen in both early and late wood are tracheids. In softwoods like pine, these carry out both sap- conducting and mechanical functions; the large early tracheids are primarily concerned with conduction, whereas the much smaller late ones act primarily as structural elements. Magnification: x13 at 35mm size.

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Keywords: botany, nature, pine, pinus sylvestris, plant, plants, scots, scots pine, softwood, tracheid, type, wood

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