Pteropsida
plural noun
Pte·rop·si·da
| \ -sədə\
Definition of Pteropsida
: a subdivision of Tracheophyta comprising vascular plants (as the ferns and flowering plants) with well-developed and typically large leaves, leaf gaps usually present in the primary vascular cylinder, and sporangia abaxial on normal or modified leaves and including the classes Filicineae, Gymnospermae, and Angiospermae — compare lycopsida , psilopsida , sphenopsida
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