L. japonica may refer to: Laminaria japonica, a marine species of brown algae Leptanilla japonica, an ant species in the genus Leptanilla Limnophila japonica, a crane fly species in the genus Limnophila Lipoptena japonica, a louse fly species in the genus Lipoptena Lonchoptera japonica, a spear-winged fly species in the genus Lonchoptera Lonicera japonica, the Japanese honeysuckle or suikazura, a flowering plant species native to eastern Asia Luehdorfia japonica, the Japanese luehdorfia, a butterfly species found in Japan and China See also Japonica (disambiguation)