genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America
type genus of the Megapodiidae
birch leaf miner
a genus including the common European kits
a deficiency of red blood cells
genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America
a lack of vitality
(biology) taxonomic group containing one or more species
