Arch - Atti
- Asperugo procumbens
- Asperula cynanchica
- Asperula odorata
- Asphalt
- Asphalt
- Asphalt rock
- Asphalt stone
- Asphalte
- Asphaltic
- Asphaltite
- Asphaltite
- Asphaltum
- Asphaltus
- Asphodel
- Asphodelus
- Asphodelus albus
- Asphyctic
- Asphyxia
- Asphyxial
- Asphyxiate
- Asphyxiated
- Asphyxiation
- Asphyxied
- Asphyxy
- Aspic
- Aspic
- Aspic
- Aspidiotus Aurantii
- Aspidiotus aurantii
- Aspidiotus Nerii
- Aspidiotus perniciosus
- aspidistra
- Aspidistra elatio
- Aspidium acrostichoides
- Aspidium athamanticum
- Aspidium Filixmas
- Aspidium marginale
- Aspidobranchia
- Aspidonectus ferox
- Aspidophoroides