image: Sunflower just prior to bud opening. This material relates to a paper that appeared in the Aug. 5, 2016 issue of Science, published by AAAS. The paper, by H.S. Atamian at University of California, Davis in Davis, CA, and colleagues was titled, 'Circadian regulation of sunflower heliotropism, floral orientation, and pollinator visits.' view more
Credit: Ben Blackman, UC Berkeley