Henan Province is situated in the transition zone of subtropic and temperate zone with a lot of species of Russula genus. 河南省位于暖温带和亚热带的过渡地带，因此红菇属的种类分布较为丰富。
subtropic英英释义
Adjective:
of or relating to or characteristic of conditions in the subtropics;
"even near the equator vegetation at 5000 ft is subtropical rather than tropical"
