又称藏精器.轮藻门植物的雄性生殖器官.由多细胞构成，通常为球形，桔红色，外面有８个盾状细胞，每个盾状细胞里面中央各有１个盾柄细胞，每个盾柄细胞的顶端各有１个小的头状细胞，每个头状细胞又可产生几个次级头细胞，再从这些次级头细胞产生出许多单列细胞的丝，叫精囊丝，精囊丝的每个细胞就是一个精子囊，其内各产生１个精子.精囊球的结构在藻类植物中是极为罕见而特殊的雄性生殖器官，不仅是多细胞的，而且还有许多由不育细胞形成的保护和支持结构.GOOGLE英文翻译:Also known as the Tibetan SEIKI. Charophyta male reproductive organs of plants. By a multi-cellular structure, usually spherical, orange-red, the outside there are 8 shield-shaped cells, each shield-shaped cells, each a shield inside the central stalk cells, Each shield on top of each stalk cells, a small head-shaped cells, each of the first dendritic cells can also lead to several sub-head cells, and from these sub-head cells to produce many separate cells, silk, called the seminal vesicle silk, seminal vesicle silk Each cell is a sperm sac, which produces a sperm within. seminal vesicle structure in algae ball is extremely rare and special male reproductive organs, not only is a multi-cell, but also by the many infertility cell formation protection and support structures.