Mniaceae
- Photographic images of the genera Mnium, Plagiomnium and Rhizomnium.
- http://www.bioimages.org.uk/HTML/T6544.HTM

Pseudobryum cinclidioides
- A photograph of the gametophyte.
- http://www.nic.funet.fi/pub/sci/bio/life/plants/bryophyta/bryopsida/bryales/mniaceae/pseudobryum/cinclidioides-1U.jpg

Archegonia
- An image of the female structure of a Mnium species.
- http://botit.botany.wisc.edu/images/130/Bryophytes/Bryophyta/Mnium_archegonia130_.html

Plagiomnium undulatum
- A photographic image.
- http://www.helsinki.fi/~korpela/plagiomnium_undulatum.html

Mnium affine
- A photograph of a male shoot.
- http://www.science.siu.edu/landplants/Bryophyta/images/Mnium.cil.male.JPEG

Mnium hornum
- 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/mhornum.htm

Mnium
- A microscopic image of the antheridia of a Mnium species.
- http://www.dipbot.unict.it/sistematica/Mnium_an.html