Phylum Tracheophyta
Phylum Tracheophyta
Vascular Plants
Subphylum Psilopsida
Whisk Ferns
Subphylum Sphenopsida (30+ species)
Horsetails
Subphylum Lycopsida (1061+ species)
Clubmosses, Spikemosses, and Quillworts
Subphylum Pteropsida (810+ species)
Ferns
Subphylum Spermopsida (183494+ species)
Seed Plants
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