P. terrestris may refer to: Pedilochilus terrestris, an orchid species in the genus Pedilochilus Phaeotrichoconis terrestris, a plant pathogen species Phyllastrephus terrestris, a songbird species Phytophthora terrestris, a water mould species Pseudotetracystis terrestris, an alga species in the genus Pseudotetracystis Pyrenochaeta terrestris, a fungal plant pathogen species
See also Terrestris