The chromosome number of Iris tectorum Maxim is 2 n=28,with 2 B karyotype ,and the karyotype formula is 2 n=28=10 sm+18 sm.

• 鸢尾的染色体数目为 2 n=2 8,核型公式为 2 n=2 8=10 sm+18sm,核型类型为 2 B。