Horsetails (Equisetum) are pteridophytes that are mostly found in damp and shady regions.
Pteridophytes were the first vascular plants.
Vascular plants possess vascular tissues such as xylem and phloem.
Xylem helps in the transport of water and minerals from roots to other parts of the plant while phloem helps in the transport of food from leaves to other parts of the plant.