The prop roots are modified adventitious roots that arise from parts other than the roots, like stems, branches, etc. These roots are known to provide extra support to the plants. These roots are long and slender. The buttress roots generally develop at the base of the trunk of a tree and give a flattened appearance. Though buttress roots are also aerial roots, they are found in shallow, saturated soils. The main function of buttress roots is to stabilise trees in shallow areas.