Analyses were metrics of the match between a flower’s inflection points and the hue-discrimination optima of the hymenopteran, avian VS and avian UVS visual systems. By comparison with hymenopteran optima at 400 nm and 500 nm. Relative to the optima at 460, 540 and 600 nm of avian VS
Vision and relative to the avian UVS optima at 416, 489, and 557 nm