Mosses
Mosses are made from rhizoids which make it look like thin rootlike structures, along with anchoring the moss.
Liverworts and Hornworts
Liverworts and Hornworts are two other groups of non-vascular plants, there are 8,000 species of Liverworts. The reason they're known as that is because of how it looks.
Vascular Tissue
Ancient trees were vascular plants, vascular plants are plants with actual vascular tissue.
