(Gr. pteris: kind of fern; phyton: plant) In traditional classification systems, a division of the plant kingdom that included ferns, horsetails, and clubmosses, i.e. the nonseed-bearing tracheophytes. These are now classified as separate phyla: Filicinophyta (ferns), Sphenophyta (horsetails), Lycophyta (clubmosses), and Psilophyta.
There are approximately 7 species, subspecies, varieties, forms, and cultivars in this genus: W. angulariloba · W. beddomei · W. formosa · W. japonica · W. nipponica · W. ogasawarensis · W. simulata
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