genus Osmanthus
— Navneord
– Engelsk
~ widely distributed genus of evergreen shrubs or trees of southern United States and Middle East and China and Japan
genus Osmerus
— Navneord
– Engelsk
~ type genus of the Osmeridae
genus Osmunda
— Navneord
– Engelsk
~ type genus of the Osmundaceae
genus Ostrea
— Navneord
– Engelsk
~ type genus of the family Ostreidae
genus Ostrya
— Navneord
– Engelsk
~ deciduous monoecious trees of Europe and Asia and America; sometimes placed in subfamily or family Carpinaceae
genus Ostryopsis
— Navneord
– Engelsk
~ deciduous monoecious shrubs of China and Mongolia resembling trees of the genus Ostrya; sometimes placed in subfamily or family Carpinaceae
genus Otaria
— Navneord
– Engelsk
~ type genus of the Otariidae
genus Othonna
— Navneord
– Engelsk
~ genus of western African herbs or shrubs
genus Otis
— Navneord
– Engelsk
~ type genus of the Otididae: European bustard
genus Otus
— Navneord
– Engelsk
~ a genus of Strigidae