Bog moss that has no rhizoid and rarely bears a capsule ; it has a high water content and its decomposition helps to form peat .
没有根状，并且的泥炭藓很少负担一个胶囊;它有一个水位高内容，并且它的分解帮助形成泥煤。
The small cell geminates to a rhizoid by tip growth , and the large cell further divides and develops to become a prothallus ( the fern gametophyte ) .
