Ceratolejeunea
- Characteristics of this genus of about 50 species.
- http://www.mobot.org/plantscience/bfna/V3/LejeCeratolejeunea.htm

Lejeuneaceae
- Characteristics of this large family containing about 75 genera and 1000 species.
- http://www.mobot.org/plantscience/bfna/V3/LejeLejeuneaceae.htm

Marchesinia mackaii
- 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/mmackii.htm

Cololejeunea minutissima
- 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/colminut.htm