Clostridium tetani
Penetrating injuries can introduce pathogenic microorganisms into the wound. Examples include "Clostridium tetani" and "Staphylococcus aureus" (from spines and thorns), "Sporothrix schenckii" (from rose thorns, grasses, and sphagnum moss), "Mycobacterium kansasii" (from blackberries), "Mycobacterium marinum" (from cactus spines), and "Mycobacterium ulcerans" (from spiky tropical vegetation).