A Close-up View of Wild Apple Blossoms - Photographic study by Brian Johnston of Malus sylvestris, with many fine images, both macroscopic and microscopic. - http://www.microscopy-uk.org.uk/mag/artapr06/bj-WildApple.html
Malus domestica (Domestic Apple) - Information on this fruit which is a hybrid of at least 4 wild species. - http://www.museums.org.za/bio/plants/rosaceae/malus_domestica.htm
Malus pumila - Flower image and US range of the domestic apple. - http://plants.usda.gov/java/profile?symbol=MAPU
Apple - Short description and medicinal uses of Malus pumila. - http://www.botanical.com/botanical/mgmh/a/apple044.html