*[http://www.ipni.org/ipni/simplePlantNameSearch.do?find_wholeName=Pyrola&output_format=normal&query_type=by_query&back_page=query_ipni.html IPNI]
*[http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:45:1329164412874601::NO::P7_BOTNAME,P7_DB_CHECKBOX1,P7_DB_CHECKBOX2,P7_DB_CHECKBOX4:Pyrola,,, Mansfeld]
*[http://herb.umd.umich.edu/herb/search.pl?searchstring=Pyrola Moerman, Native American Ethnobotany]
*[http://www.plantnames.unimelb.edu.au/Sorting/Pyrola.html Multilingual Plant Name Database]
*[http://www.theplantlist.org/tpl1.1/search?q=Pyrola Plant List]