Seedless vascular plants

The Seedless Vascular Plants consist of four main Divisions; Pterophyta (ferns), Psilophyta, Lycophyta, and Sphenophyta. These plants all share the common evolutionary trait of vascular tissue; specialized transport tissue found in most "modern" plants. Xylem and phloem, the two major types of vascular tissue, each transport water and nutrition, respectively, to the upper regions of the plant from the root system. The Vascular Seedless plants are the most evolutionarily advanced plants aside from the seeded plants.