| It is seldom that more than one antheridium applies itself to an oogonium. |
| The antherozoids, always many in number, develop from mother cells enclosed in the jacket of the antheridium. |
| The prothallus is exceedingly small, being little more than a group of cells forming an antheridium. |
| At maturity, the antheridium bursts releasing the sperm cells or antherozoids. |
| When mature antheridia were watered, the opercular cell and crescent-shaped cell were shed, and 32 spermatozoids were released from each antheridium. |
| These particles become globose cells, grouped in the centre of the antheridium. |
