1. Colombian tree; source of Cartagena bark (a cinchona bark)
   - Cartagena bark, Cinchona cordifolia

Type of: chinchona, cinchona

Part of: genus Chinchona, genus Cinchona

• genus Mugil
• genus Muhlenbergia
• genus Mulloidichthys
• genus Mullus
• genus Muntiacus
• genus Muntingia
• genus Mus
• genus Musa
• genus Musca
• genus Muscardinus
• genus Muscari
• genus Muscicapa
• genus Muscivora
• genus Musophaga
• genus Mustela
• genus Mustelus
• genus Mutinus
• genus Mutisia
• genus Mya
• genus Myadestes
• genus Mycobacterium
• genus Mycoplasma
• genus Mycteria
• genus Mycteroperca
• genus Mylodon