Tortula muralis: My First Moss
- Photographic study by Derek Christie of this species, with many interesting photomicrographs.
- http://www.microscopy-uk.org.uk/mag/artmar03/dcmoss.html

The MossCam Project
- The Star Moss, Tortula princeps, is a tolerant of dessication and this continuous recording can illustrate how it rehydrates within minutes after rainfall.
- http://www.jamesreserve.edu/mosscam/

Family Pottiaceae
- Photographic images of Tortula muralis which often grows on walls in urban environments.
- http://www.hiddenforest.co.nz/bryophytes/mosses/familys/pottiaceae/pottiaceae.htm

Tortula muralis
- A photographic image of Tortula muralis.
- http://www.forestryimages.org/browse/subimages.cfm?SUB=12682

Tortella humilis
- A photographic image of Tortella humilis.
- http://www.forestryimages.org/browse/detail.cfm?imgnum=1115167

Tortula
- Scanning electron micrograph of the spore capsule of a Tortula species.
- http://www.alamy.com/stock_photography/3/6/Dennis+Kunkel/AFPC31.html

Tortula thallus
- Scanning electron micrograph of spores of Tortula thallus magnified 1155x.
- http://www.alamy.com/stock_photography/3/9/Dennis+Kunkel/AFPC33.html

Tortula ruraliformis
- Description and good photographic images of this species which grows on sand dunes where it is well adapted to enduring drought conditions.
- http://www-biol.paisley.ac.uk/bioref/Bryophyta/Tortula_ruraliformis.html

Pottiaceae
- Photographic images of several genera.
- http://www.bioimages.org.uk/HTML/T6551.HTM