Referencias

elmusgo.blogspot.com
http://elmusgo.blogspot.com/2013/03/grimmia-pulvinata.html

biomoncayo.blogspot.com.es
http://biomoncayo.blogspot.com.es/2012/02/grimmia-pulvinata-hedw-sm.html

blogs.ubc.ca
http://blogs.ubc.ca/biology321/?page_id=508

bbsfieldguide.org.uk
http://www.bbsfieldguide.org.uk/sites/default/files/pdfs/mosses/Grimmia_pulvinata.pdf