P. glaucus may refer to: Papilio glaucus, the Eastern tiger swallowtail, a butterfly species native to North America Phyllobius glaucus, a weevil species found across Europe Phyllocladus glaucus, now Phyllocladus aspleniifolius, the celery-top pine Pluteus glaucus, a medicinal mushroom Pseudomys glaucus, the blue-gray mouse
See also Glaucus (disambiguation)