O. ferruginea
Introduction '''O. ferruginea''' may refer to:* ''Olea ferruginea'', a synonym for ''Olea europaea subsp. cuspidata'', a tree species* ''Orthemis ferruginea'', the roseate skimmer, a dragonfly species* ''Oxyura ferruginea'', the ruddy duck, a bird species
See also * Ferruginea (disambiguation)