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Pinus silvestris L.
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Common Pine, Scots Pine
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Pinaceae
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Transversal section |
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Growth ring boundaries always distinct. Transition from early- to latewood generally abrupt. Large resin canals with thin-walled epithelial cells. Considerable fluctuation in wood density and occasionally false growth rings are observed in samples from lowland regions. |
       
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Radial section |
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Tracheid pits almost uniseriate. Rays heterocellular. Ray tracheids with dentated walls. Cross-fields from parenchyma cells to tracheids with one (rarely two) large fenestriform pits. |
  
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Tangential section |
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Average height of rays 8 to 15 cells. Resin canals in rays with thin-walled epithelial cells. |
   
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Key characters |
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Resin canals with thin-walled epithelial cells. Rays with large fenestriform pits, ray tracheids with distinctly dentate walls. |
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Remarks |
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The species P. silvestris, P. mugo and P. nigra cannot be distinguished on the basis of their wood anatomy. |
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