Pteropsida
plural noun
Pte·rop·si·da
-sədə
: 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
Word History
Etymology
New Latin, from Pteropsis, genus of ferns (from pter- + -opsis) + -ida