P. japonica may refer to: Paeonia japonica, a plant species native of the islands of northern Japan Parasteatoda japonica, a spider species in the genus Parasteatoda found in China, Taiwan, Korea and Japan Patanga japonica, a grasshopper species found in Japan Peyssonnelia japonica, a red alga species Philbertia japonica, a sea snail species Pieris japonica, the Japanese andromeda, a plant species native to eastern Asia and Japan Pleodorina japonica, a colonial green alga species in the genus Pleodorina Pogonia japonica, an orchid species occurring from China to Japan Pollia japonica, the yabumyoga, a perennial flower species native to East Asia Polysiphonia japonica, a red alga species Popillia japonica, the Japanese beetle, an insect species Prunus japonica, the Korean cherry, flowering almond or Oriental bush cherry, a shrub species Pseudotsuga japonica, the Japanese Douglas-fir, a conifer species endemic to Japan Pterygia japonica, a sea snail species Synonyms Pseudotorynorrhina japonica, a synonym for Rhomborrhina japonica, a beetle species Pterocarya japonica, a synonym for Pterocarya stenoptera, the Chinese wingnut, a tree species originally from Southeast China See also Japonica (disambiguation)