The liverworts divides into three types in the nature reserve , obligate , commonly facultative and occasionally facultative types and the commonly facuhative type is dominant totaling 26 species and accounting for 60 . 4 % of all the species in the reserve 保护区内叶附生苔类植物可以分成3种类型：专性、兼性常见和兼性偶见，其中兼性常见类型种类占有绝对优势，共有26种，占其总种数的60 . 47 % 。
Reinsurance has been more than 600 years old since 1370 . during this long period , reinsurance has fallen into many different types such as facultative , obligatory and facultative - obligatory reinsurance on an arrangement basis and proportional and non - proportional reinsurance on a liability basis 到今天，再保险己经走过了600多年的历史，期间产生了按安排方式划分的临时再保险、合同再保险和预约再保险以及按责任分配形式划分的比例再保险和非比例再保险。
( 3 ) the value of p / 0 of c . praecox is 2847 . 3 + 1125 . 0 , and the total value of oci is 3 . with the above results , pollen germination rate and seed set rate , all shows that breeding system of c . praecox is facultative hybridization . the breeding system of c . nitens is similar to c . praecox , but it is higher in proportion of self - pollination than that of c . praecox ( 3 )蜡梅p / 0值为2847 . 3 1125 . 0 、 oci累计分值等于3 ，与不同处理的花粉萌发率和结实率的结果一样，都显示蜡梅繁育系统为兼性异交类型；亮叶蜡梅繁育系统同蜡梅相似，但亮叶蜡梅的自交比例相对较高
