Image of Rafflesiaceae Rafflesia manillana

Rafflesia has the largest flower among angiosperms. But, R. manillana is not the largest flower - more likely R. arnoldii.

http://www.plantsystematics.org/cgi-bin/dol/dol_image_frame.pl?image_id=4647&image_file=http://www.PlantSystematics.org/users/kcn2/rafflesia.jpg&family=Rafflesiaceae&genus=Rafflesia&species=manillana