The image to the right shows the region where Secondary Phloem is located in a young stem of Pinus. It is difficult to discern much more at this magnification. |
  |
 |
|
Cross-Section of Secondary Xylem & Phloem of Pinus |
|
The Secondary Phloem in Pinus lacks fibers and is composed of Sieve Cells, Albuminous Cells & Parenchyma. The Parenchyma cells have dark contents. Otherwise it is impossible to discern the other cell types. Note the collapsed Secondary Phloem on the far right side of the image. |
|
Secondary
Phloem in Pinus. The Phloem Parenchyma contain Druse Crystals and darkly stained deposits. It is hard to distinguish other cell types in Cross-section. |
|