1. The basic unit of money in Niger

Type of: franc

• genus Ononis
• genus Onopordon
• genus Onopordum
• genus Onosmodium
• genus Onychium
• genus Onychogalea
• genus Onychomys
• genus Opheodrys
• genus Ophiodon
• genus Ophioglossum
• genus Ophiophagus
• genus Ophisaurus
• genus Ophrys
• genus Opisthocomus
• genus Opuntia
• genus Orbignya
• genus Orchestia
• genus Orchis
• genus Orcinus
• genus Oreamnos
• genus Orectolobus
• genus Oreopteris
• genus Oreortyx
• genus Origanum
• genus Oriolus