| Search for the clusters of these small, more or less isodiametric cells. |
| These species had roots with uniseriate epidermis and cortex with isodiametric cells. |
| Epidermal cells are isodiametric in the laminar portions of the leaf and distinctly elongate above the veins. |
| Nodal tracheary elements are isodiametric to fusiform in shape, and have crowded circular to elongate prominently bordered pits and uniformly thick secondary walls. |
| Cell shape is usually irregular in all species except Portulaca grandiflora Hook that is isodiametric on the adaxial surface and irregular on the abaxial surface. |
| The hypodermis consisted of a single layer cells that were larger than epidermal cells and were also isodiametric. |
