Existence
Life
Plants
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Plants - Seedless
Ferns, tree ferns, whisk ferns, horsetails, quillworts, clubmosses, spikemosses, firmosses, and extinct relatives.
(Taxonomic Rank: Subkingdom)
Seedless plants including Isoetales, Psilotopsida, Equisetopsida, Marattiopsida, Polypodiopsida, Lycopodiales, Selaginellales, and Basal Tracheophytes. Isoetales Psilotopsida Equisetopsida Marattiopsida Polypodiopsida Lycopodiales Selaginellales Basal Tracheophytes & Prehistoric Lycophytes