M. polymorpha

M. polymorpha may refer to:


 * Macrozamia polymorpha, a plant endemic to New South Wales, Australia
 * Marchantia polymorpha, a large liverwort
 * Martinia polymorpha, a perennial herb
 * Medicago polymorpha, a plant native to the Mediterranean Basin
 * Melanoides polymorpha, a freshwater snail
 * Metrosideros polymorpha, an evergreen tree
 * Mima polymorpha, a gram-negative bacterium
 * Mitra polymorpha, a sea snail
 * Mitrasacme polymorpha, a perennial herb
 * Moquinia polymorpha, a sunflower native to Brazil, Bolivia, and Paraguay
 * Moraxella polymorpha, a gram-negative bacterium
 * Munidopsis polymorpha, a squat lobster
 * Mycosphaerella polymorpha, a plant pathogen
 * Mylabris polymorpha, a blister beetle