HOKKAIDO is located between 41'21" and 45'33" of the north latitude and located in the northern part of Japan.
The temperature is relatively low throughout the year, the transition of the four seasons are distinctive, and the humidity is lower in Japan.
The vegetation of HOKKAIDO is almost composed by decidious broad-leaf forest in the cool temperate zone and conifer mixed forest in the sub-arctic zone.
So the vascular flora of HOKKAIDO contains a lot of temperate and subarctic species.