スギ科スギ属の常緑針葉高木で、学名は Cryptomeria japonica。英名は Japanese cedar。
The Japanese cedar (Cryptomeria japonica) belongs to Taxodiaceae (the Bald cypress family). It is a tall evergreen tree that is endemic to Japan and distributed southward to Honshu to Shikoku, Kyushu and Yaku Island. This tree grows along mountain streams and can reach up to 50 m in height. Its Japanese name is said to come from the word "suki", meaning "straight tree" because of its upright trunk, or the meaning of a tree standing fast. It is planted widely and bears most artificial regeneration areas in Japan. The timbers are used for architectures. The 44th-46th, 53th, 56th, 60th and 61th photos are a trace of bark peeling by a bear.