F. ferruginea may refer to: Fimbristylis ferruginea, the rusty sedge, a plant species Freziera ferruginea, a plant species endemic to Peru
Synonyms Fagus ferruginea (disambiguation) may refer to one of the beech tree species:
Fagus ferruginea Dryand., a synonym for Fagus grandifolia subsp. grandifolia (American Beech) Fagus ferruginea var. caroliniana Loudon, also a synonym for Fagus grandifolia subsp. grandifolia Fagus ferruginea Siebold (Invalid), a synonym for Fagus crenata Blume (Japanese beech)
See also Ferruginea (disambiguation)