Romanesco Broccoli (image) Friedrich-Schiller-Universitaet Jena Share Print E-Mail Caption Mathematics in the Romanesco broccoli. The spiral structures are based on the Fibonacci sequence, which can be observed in nature, but also in art. Credit Jan-Peter Kasper/FSU Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.