| It had larger cells and more sclerenchyma and collenchyma in between the vascular bundle and epidermal cells. |
|
| In microscope sections note that vascular bundles are reinforced by a bundle of cortical collenchyma that form the characteristic stem ridges in Equisetum. |
|
| On the outside of the vascular cylinder lies 5 to 8 layers of angular collenchyma which forms the main mechanical tissue in the primary stem. |
|
| The main nerve, very protuberant, in the adaxial and abaxial face, was strengthened by laminar collenchyma. |
|
| Such strands are most frequently encountered when there is little or no collenchyma development. |
|
