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 ) .

小细胞萌发出极性生长的假根,大细胞继续分裂发育为原叶体(配子体)。