Their karyotype formulae are presented as follows: Cyclobalanopsis glauca : k(n)=0m(SAT)+sm; Cyclobalanopsis gracil核型公式：青冈为 K(n)=0m(SAT)+Sm，小叶青冈为K(n)=0m+Sm(SAT)，卷斗青冈为K(n)=m+Sm；