M. portoricensis may refer to:
- Machaonia portoricensis, a flowering plant
- Magnolia portoricensis, a magnolia native to Puerto Rico
- Marasmius portoricensis, a mushroom-forming fungus
- Melanerpes portoricensis, a woodpecker endemic to Puerto Rico
- Mimetus portoricensis, a pirate spider
- Moodnopsis portoricensis, a snout moth
This disambiguation page lists articles associated with the same abbreviated species scientific name.
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