Flexi Says: Surviving descendants of early vascular plants include clubmosses and ferns. There are 1,200 species of clubmoss and more than 20,000 species of fern. Both types of vascular plants are seedless and reproduce with spores. Since these plants depend on water during fertilization, for the sperm to swim to the egg, they are found in moist areas like marshes, swamps and rainforests.