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Alnus viridis DC.
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Green Alder
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Betulaceae
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Transversal section |
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Diffuse-porous. Pores in comparison with other Alder species are more scattered, in shorter radial multiples and groups, often clustered. Aggregate rays are absent. Diffuse, apotracheal parenchyma. Pith triangular. |
             
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Radial section |
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Scalariform perforation plates with 10 to 20 bars. Rays homogeneous. Ray-vessel-pits relatively small. Generally ibriform fibres, fibre-tracheids rare. |
   
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Tangential section |
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Uniseriate rays. Average ray height: 8 to 20 cells. |
   
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Key characters |
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Diffuse-porous. Radial pore multiples, scattered. Scalariform perforation plates with 10 to 20 bars. |
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