This is the top level category for angiosperm taxa which have been recognized historically, but are not used currently (e.g. not used in the APG III system).
Non-angiosperm articles (those about bryophytes, pteridophytes, gymnosperms) are listed in the appropriate "Historically recognized plant ..." categories; start at Category:Historically recognized plant taxa.
Where historical usage and nomenclature are clear, angiosperm articles are listed in one of the more specific subcategories for orders, families or genera. All other ranks and mixed usages are listed here.