Species having 'affinis' as epithet name:
- Asphodelus affinis Syn. for: Asphodelus ramosus
- Ceropegia affinis
- Laccaria affinis Syn. for: Laccaria laccata
- Monarda affinis Syn. for: Monarda fistulosa
- Nicotiana affinis Syn. for: Nicotiana alata
- Persicaria affinis
- Sponia affinis Syn. for: Trema orientalis
- Trema affinis Syn. for: Trema orientalis