樺 - birch, dark red

Japanese white birch (Betula platyphylla var. japonica)

Japanese foliage spider (Chiracanthium japonicum)

Koreans residing on Sakhalin island

Treaty of Saint Petersburg (1875); Russo-Japanese treaty in which Japan exchanged Sakhalin for the Kuril Islands

birch tree (esp. the Japanese white birch, Betula platyphylla var. japonica)

birch (esp. Japanese white birch)

monarch butterfly (Danaus plexippus)

reddish yellow

capelin; caplin (Mallotus villosus)

greater spotted eagle (Aquila clanga)

chaga mushroom (Inonotus obliquus)

monarch birch (Betula maximowicziana); Japanese birch