| Pits at the intersection fields of cells of radial parenchyma with longitudinal tracheids are pine-like type with small flanges. |
| In conifers, the tracheids, which account for most of the wood, give the tree rigidity and form most of the xylem. |
| Sporadic pitting is present but only in the last few rows of latewood tracheids. |
| Vessel elements, tracheids, fibres, sieve tube elements, sieve cells, and parenchyma cells are the major components of vascular tissue. |
| Archaeosigillaria had an exarch actinostele with scalariform and reticulate tracheids. |
| It can be seen in Fig 3b that the tracheids are pulling apart along their centre lines. |
