Opinions from A. B. Doweld 2001
- 'Aneurophytaceae belongs to Aneurophytales'
- 'Aneurophytales belongs to Aneurophytopsida'
- 'Aneurophyton belongs to Aneurophytaceae'
- 'Aneurophytophyta belongs to Cycadophytanae'
- 'Aneurophytophytina belongs to Aneurophytophyta'
- 'Aneurophytopsida belongs to Aneurophytophytina'
- 'Angaropeltidaceae belongs to Umkomasiales'
- 'Angaropeltis belongs to Angaropeltidaceae'
- 'Angaropeltis piniforme belongs to Angaropeltis'
- 'Angaropeltis sentjakense belongs to Angaropeltis'
- 'Arberiaceae belongs to Arberiales'
- 'Arberiales belongs to Arberiopsida'
- 'Arberiopsida belongs to Peltaspermophyta'
- 'Archaeopteridaceae belongs to Archaeopteridales'
- 'Archaeopteridales belongs to Archaeopteridopsida'
- 'Archaeopteridophyta is a subjective synonym of Aneurophytophyta'
- 'Archaeopteridophytina belongs to Aneurophytophyta'
- 'Archaeopteridopsida belongs to Archaeopteridophytina'
- 'Archaeopteris belongs to Archaeopteridaceae'
- 'Asterocalamitaceae belongs to Asterocalamitales'
- 'Asterocalamitales belongs to Asterocalamitopsida'
- 'Asterocalamitopsida belongs to Equisetophyta'
- 'Asterothecales belongs to Marattiopsida'
- 'Autophyllitaceae belongs to Autophyllitales'
- 'Autophyllitales belongs to Asterocalamitopsida'
- 'Autuniaceae belongs to Peltaspermales'
- 'Botryopteridiaceae belongs to Botryopteridiales'
- 'Botryopteridiales belongs to Botryopteridiopsida'
- 'Botryopteridiophyta belongs to Pteridophytanae'
- 'Botryopteridiopsida belongs to Botryopteridiophyta'
- 'Botryopteridium belongs to Botryopteridiaceae'
- 'Breyteniaceae belongs to Dictyopteridiales'
- 'Bryobiotina belongs to Tracheophyta'
- 'Calamitales belongs to Calamitopsida'
- 'Calamitopsida belongs to Equisetophyta'
- 'Calamocarpales belongs to Calamitopsida'
- 'Calathiopsidaceae belongs to Pullarithecales'
- 'Cardiolepis is replaced by Angaropeltis'
- 'Cardiolepis sentjakensis belongs to Cardiolepis' according to Esaulova 1986
- 'Cardiolepis sentjakensis is an objective synonym of Angaropeltis sentjakense'
- 'Cingulariaceae belongs to Calamitales'
- 'Cladoxylophyta belongs to Pteridophytanae'
- 'Cladoxylopsida belongs to Cladoxylophyta'
- 'Codonospermaceae belongs to Codonospermales'
- 'Codonospermales belongs to Pachytestopsida'
- 'Colpospermaceae belongs to Hexapterospermales'
- 'Cooksoniales belongs to Zosterophyllopsida'
- 'Cordaitopsida belongs to Pinophyta'
- 'Cornucarpaceae belongs to Callistophytales'
- 'Crossothecaceae belongs to Crossothecales'
- 'Crossothecales belongs to Urnatopteridopsida'
- 'Crossozamiaceae belongs to Cycadales'
- 'Cycadaceae belongs to Cycadales'
- 'Cycadales belongs to Cycadopsida'
- 'Cycadeoideales belongs to Cycadeoideopsida'
- 'Cycadeoideophyta belongs to Cycadophytanae'
- 'Cycadeoideopsida belongs to Cycadeoideophyta'
- 'Cycadophyta belongs to Cycadophytanae'
- 'Cycadophytanae belongs to Pteridobiotina'
- 'Cycadopsida belongs to Cycadophyta'
- 'Denkaniaceae belongs to Lidgettoniales'
- 'Dictyopteridiaceae belongs to Dictyopteridiales'
- 'Dictyopteridiales belongs to Dictyopteridiopsida'
- 'Dictyopteridiopsida belongs to Peltaspermophyta'
- 'Dioaceae belongs to Dioales'
- 'Dioales belongs to Cycadopsida'
- 'Dioon belongs to Dioaceae'
- 'Discopteridaceae belongs to Discopteridales'
- 'Discopteridales belongs to Urnatopteridopsida'
- 'Echinostachyales belongs to Equisetopsida'
- 'Equisetophyta belongs to Pteridophytanae'
- 'Equisetopsida belongs to Equisetophyta'
- 'Ferugliocladales belongs to Voltziopsida'
- 'Filicopsida is a subjective synonym of Pteridopsida'
- 'Ginkgoopsida belongs to Ginkgophyta'
- 'Glossopteridaceae is a subjective synonym of Dictyopteridiaceae'
- 'Glossopteridopsida is a subjective synonym of Dictyopteridiopsida'
- 'Gnetophyta belongs to Cycadophytanae'
- 'Gnetopsida belongs to Gnetophyta'
- 'Gnetopsidaceae belongs to Pullarithecales'
- 'Gondwanostachyales belongs to Equisetopsida'
- 'Hexapterospermaceae belongs to Hexapterospermales'
- 'Hexapterospermales belongs to Lyginopteridopsida'
- 'Isoetophyta belongs to Lycopodiobiotina'
- 'Isoetophytina belongs to Isoetophyta'
- 'Jurinodendraceae belongs to Jurinodendrales'
- 'Jurinodendrales belongs to Lepidocarpopsida'
- 'Jurinodendron belongs to Jurinodendraceae'
- 'Kallostachyaceae belongs to Calamitales'
- 'Karkeniaceae belongs to Karkeniales'
- 'Karkeniales belongs to Umaltolepididae'
- 'Konnostachyaceae belongs to Gondwanostachyales'
- 'Konnostachys belongs to Konnostachyaceae'
- 'Langiophytaceae belongs to Langiophytales'
- 'Langiophytales belongs to Langiophytopsida'
- 'Langiophytophyta belongs to Bryobiotina'
- 'Langiophytopsida belongs to Langiophytophyta'
- 'Leclercqiaceae belongs to Leclercqiales'
- 'Leclercqiales belongs to Leclercqiopsida'
- 'Leclercqiophytina belongs to Isoetophyta'
- 'Leclercqiopsida belongs to Leclercqiophytina'
- 'Lepidocarpopsida belongs to Isoetophytina'
- 'Leuthardtiaceae belongs to Peltaspermales'
- 'Lidgettoniales belongs to Dictyopteridiopsida'
- 'Lycopodiobiotina belongs to Tracheophyta'
- 'Lycopodiophyta belongs to Lycopodiobiotina'
- 'Lycopodiopsida belongs to Lycopodiophyta'
- 'Lyginopteridopsida belongs to Cycadophytanae'
- 'Lyonophytaceae belongs to Lyonophytales'
- 'Lyonophytales belongs to Langiophytopsida'
- 'Magnoliophyta belongs to Cycadophytanae'
- 'Marattiophyta belongs to Pteridophytanae'
- 'Marattiopsida belongs to Marattiophyta'
- 'Miadesmiales belongs to Selaginellopsida'
- 'Moresnetiales belongs to Moresnetiopsida'
- 'Moresnetiophyta belongs to Cycadophytanae'
- 'Moresnetiopsida belongs to Moresnetiophyta'
- 'Neomariopteridaceae belongs to Neomariopteridales'
- 'Neomariopteridales belongs to Botryopteridiopsida'
- 'Neurophyllaceae is replaced by Konnostachyaceae'
- 'Noeggerathiophyta belongs to Cycadophytanae'
- 'Ophioglossophyta belongs to Pteridophytanae'
- 'Otoviciaceae belongs to Walchiales'
- 'Pachytestaceae belongs to Pachytestales'
- 'Pachytestales belongs to Pachytestopsida'
- 'Pachytestopsida belongs to Cycadophyta'
- 'Palissyales belongs to Voltziopsida'
- 'Parabotryopteridium belongs to Botryopteridiaceae'
- 'Parthaceae belongs to Lidgettoniales'
- 'Peltaspermales belongs to Peltaspermopsida'
- 'Peltaspermophyta belongs to Cycadophytanae'
- 'Peltaspermopsida belongs to Peltaspermophyta'
- 'Pentoxylopsida belongs to Peltaspermophyta'
- 'Phasmatocycadaceae belongs to Phasmatocycadales'
- 'Phasmatocycadales belongs to Phasmatocycadopsida'
- 'Phasmatocycadopsida belongs to Cycadophyta'
- 'Pinales belongs to Pinopsida'
- 'Pinophyta belongs to Cycadophytanae'
- 'Pinopsida belongs to Pinophyta'
- 'Podocarpopsida belongs to Pinophyta'
- 'Polylophospermaceae belongs to Pachytestales'
- 'Polypodiophyta is a subjective synonym of Pteridophyta'
- 'Polypodiopsida is a subjective synonym of Pteridopsida'
- 'Primofilix belongs to Botryopteridiaceae'
- 'Psilophytaceae belongs to Psilophytales'
- 'Psilophytales belongs to Psilophytopsida'
- 'Psilophyton belongs to Psilophytaceae'
- 'Psilophytophyta belongs to Psylophytanae'
- 'Psilophytopsida belongs to Psilophytophyta'
- 'Psylophytanae belongs to Pteridobiotina'
- 'Psilophytanae is a misspelling of Psylophytanae'
- 'Pteridobiotina belongs to Tracheophyta'
- 'Pteridophyta belongs to Pteridophytanae'
- 'Pteridophytanae belongs to Pteridobiotina'
- 'Pteridopsida belongs to Pteridophyta'
- 'Ptychocarpaceae belongs to Asterothecales'
- 'Pullarithecaceae belongs to Pullarithecales'
- 'Pullarithecales belongs to Moresnetiopsida'
- 'Renaliaceae belongs to Zosterophyllales'
- 'Rhyniaceae belongs to Rhyniales'
- 'Rhyniales belongs to Rhyniopsida'
- 'Rhyniophyta belongs to Psylophytanae'
- 'Rhyniopsida belongs to Rhyniophyta'
- 'Rigbyales belongs to Dictyopteridiopsida'
- 'Rufloriaceae is a subjective synonym of Vojnovskyaceae'
- 'Selaginellophytina belongs to Isoetophyta'
- 'Selaginellopsida belongs to Selaginellophytina'
- 'Senftenbergiales belongs to Botryopteridiopsida'
- 'Sphenophyllophyta belongs to Pteridophytanae'
- 'Sporophyllitaceae belongs to Sporophyllitales'
- 'Sporophyllitales belongs to Peltaspermopsida'
- 'Stauropteridopsida belongs to Botryopteridiophyta'
- 'Steloxylaceae belongs to Steloxylales'
- 'Steloxylales belongs to Cladoxylopsida'
- 'Stephanospermaceae belongs to Pachytestales'
- 'Sturianthaceae belongs to Cycadeoideales'
- 'Taxopsida belongs to Pinophyta'
- 'Tracheophyta was reranked as a unranked clade and belongs to Plantae'
- 'Trichopityaceae belongs to Trichopityales'
- 'Trichopityales belongs to Peltaspermopsida'
- 'Trimerophytaceae belongs to Psilophytales'
- 'Trimerophytales is a subjective synonym of Psilophytales'
- 'Trimerophyton belongs to Trimerophytaceae'
- 'Trimerophytophyta is a subjective synonym of Psilophytophyta'
- 'Trimerophytopsida is a subjective synonym of Psilophytopsida'
- 'Ullmanniales belongs to Voltziopsida'
- 'Umaltolepidales belongs to Umaltolepididae'
- 'Umaltolepididae belongs to Ginkgoopsida'
- 'Umkomasiales belongs to Peltaspermopsida'
- 'Urnatopteridaceae belongs to Urnatopteridales'
- 'Urnatopteridales belongs to Urnatopteridopsida'
- 'Urnatopteridopsida belongs to Botryopteridiophyta'
- 'Vojnovskyaceae belongs to Vojnovskyales'
- 'Vojnovskyales belongs to Arberiopsida'
- 'Voltziaceae belongs to Voltziales'
- 'Voltziales belongs to Voltziopsida'
- 'Voltziopsida belongs to Pinophyta'
- 'Zosterophyllales belongs to Zosterophyllopsida'
- 'Zosterophyllophyta belongs to Lycopodiobiotina'
- 'Zosterophyllopsida belongs to Zosterophyllophyta'