| Algae |
| The Chambered tissue with air pores from prepared slide click to enlarge |
|
| Ricciocarpus natans | |
| Conocephalum conicum | |
| Marchantia polymorpha | |
| Riccia collected 4/4/99 from agricultural field along Tennessee River, Alabama. Note the dark spots in the thalli--these spots are where the capsules are embedded. |
|
| Riccia from Mississippi with the common associate Sphaerocarpos | |