Pteropsida


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Pteropsida

a subdivision of the TRACHEOPHYTA, including the ferns, conifers and flowering plants.
References in periodicals archive ?
1968: A first reports of fossil fern-like Pteropsida from Costa Rica.
Primitive Land Plants Lycopsida Sphenopsida Pteropsida Examples Selaginella Equisetum Phanerogams Lycopodium Ferns Lepidophyta Transitional Protolepido- Hyeniales Protopteridales Groups dendrales
The sporophylls of the Pteropsida (ferns and seed plants) are visualized as formed by overtopping, fusion, and reduction, which lead finally to sporangia or sori along the margins of a pinnate sporophyll.