Although red-flowered taxa are spread across 13 genera ... Competition for hummingbird pollination shapes flower color variation in Andean Solanaceae. Evolution 68: 2275-2286. PDF ...

Cyanin is a vegetable blue, or rose color, which reddens by the action of acids. Blue flowers are found to possess a neutral juice, while the juices of red flowers have an acid reaction ...

Floriography, often referred to as the “language of flowers,” is a cryptological means of communication where different ...