| |
 |
|
|
| |
Sambucus racemosa L.
|
European Red Elder
|
Caprifoliaceae
|
| |
 |
| |
Transversal section |
|
|
| |
Semi-ring- to diffuse-porous, thin-walled pores, grouped in oblique and tangential clusters. Occasionally thin-walled tyloses in pores. Growth-ring boundaries generally distinct, marked by a conspicuous difference in size of earlywood and latewood pores and often marginal bands of thin-walled vascular tracheids. Parenchyma apotracheal. |
      
|
| |
| |
Radial section |
|
|
| |
Simple perforation plates. Heterogeneous rays, generally with 1 to 2 (occasionally up to 5) rows of square and upright sheath cells. Vessel pits round, ray-vessel pits large and more oval. Libriform fibres present, fibre tracheids absent. In the latewood often a wide band of vascular tracheids. |
  
|
| |
| |
Tangential section |
|
|
| |
Rays generally bi- to 4-seriate, with sheath cells. Ray height 10 to 30 cells. |
   
|
| |
| |
Key characters |
|
|
| |
Semi-ring- to diffuse-porous. Pores in clusters. Rays heterogeneous, with sheath cells. Often a band of vascular tracheids in the end of latewood. |
| |
| |
Remarks |
|
|
| |
The wood of the two species S. nigra and S. racemosa cannot be differentiated on the basis of their wood anatomy. |
| |
