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| Kingdom | Plantae
– plantes, Planta, Vegetal, plants |
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| Subkingdom | Viridiplantae
– green plants |
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| Infrakingdom | Streptophyta
– land plants |
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| Superdivision | Embryophyta
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| Division | Tracheophyta
– vascular plants, tracheophytes |
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| Subdivision | Polypodiophytina
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| Class | Polypodiopsida
– leptosporangiate ferns |
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| Subclass | Marattiidae
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| Order | Marattiales
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| Family | Marattiaceae
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| Genus | Ptisana Murdock |
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Direct Children: |
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| Species | Ptisana attenuata (Labill.) Murdock
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| Species | Ptisana boninensis (Nakai) Yonek.
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| Species | Ptisana costulisora (Alston) Murdock
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| Species | Ptisana fraxinea (Sm.) Murdock
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| Species | Ptisana grandifolia (Copel.) Murdock
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| Species | Ptisana howeana (W.R.B. Oliver) Murdock
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| Species | Ptisana melanesica (Kuhn) Murdock
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| Species | Ptisana mertensiana (C. Presl) Murdock
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| Species | Ptisana novoguineensis (Rosenst.) Murdock
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| Species | Ptisana obesa (Christ) Murdock
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| Species | Ptisana oreades (Domin) Murdock
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| Species | Ptisana pellucida (C. Presl) Murdock
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| Species | Ptisana platybasis (Copel.) Murdock
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| Species | Ptisana purpurascens (de Vriese) Murdock
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| Species | Ptisana rigida (Alderw.) Murdock
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| Species | Ptisana salicina (Sm.) Murdock
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| Species | Ptisana sambucina (Blume) Murdock
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| Species | Ptisana smithii (Mett. ex Kuhn) Murdock
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| Species | Ptisana squamosa (Christ) Murdock
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| Species | Ptisana sylvatica (Blume) Murdock
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| Species | Ptisana ternatea (de Vriese) Murdock
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Genus | Ptisana Murdock incertae sedis |
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Children with Uncertain Position: |
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| Species | Marattia dolichocarpa Alderw.
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| Species | Marattia paleolata Alderw.
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| Species | Marattia tuyamae Nakai
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