| |
 |
|
|
| |
Salix purpurea L.
|
Purple Willow, Purple Osier
|
Salicaceae
|
| |
 |
| |
Transversal section |
|
|
| |
Diffuse- to semi-ring-porous. Pores solitary or in short radial files of 2 to 3 pores, occasionally clustered. Growth ring boundaries more or less distinct, depending on abruptness of the pore size transition. Sparse apotracheal parenchyma, occasionally terminal parenchyma in uniseriate, discontinuous bands. |
  
|
| |
| |
Radial section |
|
|
| |
Simple perforation plates. Heterogeneous rays with one to two rows of square and upright, mostly marginal cells. Large, simple ray-vessel pits. Libriform fibres present. |
|
| |
| |
Tangential section |
|
|
| |
Uniseriate, very rare biseriate, rays. Ray height: 5 to 15, rare up to 30 cells. |
|
| |
| |
Key characters |
|
|
| |
Diffuse- to semi-ring-porous. Uniseriate heterogeneous rays. Large ray-vessel pits. |
| |
| |
Remarks |
|
|
| |
The wood of species of tree and shrub habit cannot be distinguished from each other on the basis of their wood anatomy. The marginal upright ray cells are occasionally absent, in such cases it is not possible to distinguish Salix from Populus. |
| |
