| Archaeosigillaria had an exarch actinostele with scalariform and reticulate tracheids. |
| Sporadic pitting is present but only in the last few rows of latewood tracheids. |
| From there the fungus colonizes the tracheids of the xylem and grows axially and vertically up to the root crown and further up the stem. |
| Lignins occur in great quantity in the secondary cell walls of fibres, xylem vessels and tracheids. |
| Graniferous tracheary elements, which may be either tracheids or vessel members, have been observed most often in the haustoria of root-parasitic angiosperms. |
| Vessel elements, tracheids, fibres, sieve tube elements, sieve cells, and parenchyma cells are the major components of vascular tissue. |
