Comparison of a Ranunculus bulbosus (Bulbous buttercup) flower in visible light (left), ultraviolet light (middle), and infrared (right).
In visible light the flower has bright yellow petals with bright yellow stamens surrounding a slightly darker yellow-green cluster of carpels at the centre. The stem and leaves are green in colour and much darker than the flower.
In ultraviolet, veining is seen much more clearly on the petals. The base of each petal has a very dark marking (a nectar guide). The carpels and stamens both appear dark as well. The stem and leaves are also dark.
In infrared the gynoecium appears the same brightness as the stamens and petals. The stem and leaves also appear much brighter than they do in visible light.