english deutsch
Floridata: Origanum majorana
http://www.floridata.com/ref/O/orig_maj.cfm
Photo, description and other valuable horticultural data
Oregano
http://www.ipgri.cgiar.org/publications/pdf/199.pdf
International Plant Genetic Resources Institute proceedings volume dealing with the taxonomy, distribution, origin, conservation, cultivation and commercial production of genus Origanum.
Origanum acutens
http://www.backyardgardener.com/rick/Origanum%20acutens.jpg
photo
Origanum heracleoticum
http://www.dipbot.unict.it/orto/0674-1.html
image
Origanum laevigatum
http://www.stauder.net/bildearkiv/Origanum%20laevigatum%20'Herrenhausern'%20RS.jpg
photo
Origanum syriacum
http://web.axelero.hu/arbix/fuszer/photos/origanum-syriacum-2b.jpg
photo
Origanum tyttanthum
http://web.axelero.hu/arbix/fuszer/photos/origanum-tyttanthum-1b.jpg
photo
Origanum vulgare
http://www.toyen.uio.no/botanisk/nbf/plantefoto/origanum_vulgare_Norman_Hagen01.jpg
photo
Origanum vulgare 'Aureum'
http://www.mobot.org/gardeninghelp/plantfinder/Plant.asp?code=A251
photo and horticultural data
Plant Profile for Origanum L.
http://plants.usda.gov/cgi_bin/topics.cgi?earl=plant_profile.cgi&symbol=ORIGA
Horticultural data and distribution of Origanum in the U.S.