Marchantia polymorpha
- Photograph of the male plants.
- http://www.science.siu.edu/landplants/Hepatophyta/images/March.male.JPEG

Marchantia
- A microscopic image
- http://www.dipbot.unict.it/sistematica/Marc_ant.html

Preissia quadrata
- A description of the habitat in which this species grows in Wales, along with a photograph of the gametophyte.
- http://home.clara.net/adhale/bryos/preissia.htm