vascular plants see Phylum Tracheophyta Sinnott ex Caval.-Sm. (1998) euphyllophytes see Subphylum Euphyllophytina 1 spermatophytes - seed plants see Class Spermatopsida 2 monilophytes - ferns see Infraphylum Moniliformopses Kenrick & Crane, 1997, nom. inval.