Acanthus volubilis (Jeruju) - Brief facts on distribution, physical traits, and habitat. Images provided. - http://mangrove.nus.edu.sg/guidebooks/text/1047.htm
Acanthus ilicifolius (Jeruju Putih) - Distribution, physical characteristics, and habitat of this species. Includes images of entire plant, flower, and fruit. - http://mangrove.nus.edu.sg/guidebooks/text/1046.htm
Acanthus ebracteatus (Jeruju Hitam) - Describes physical features and habitat. Provides photos. - http://mangrove.nus.edu.sg/guidebooks/text/1045.htm
Acanthus mollis - Images of this species. - http://www.dipbot.unict.it/orto/0359-1.html