Marsh marigold in UV light. Marsh marigold (Caltha palustris) flowers in ultraviolet (UV) light. The bull's-eye UV pattern is a result of the flower e

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Marsh marigold in UV light. Marsh marigold (Caltha palustris) flowers in ultraviolet (UV) light. The bull's-eye UV pattern is a result of the flower either reflecting UV (light areas) or absorbing UV (dark areas). This pattern is known as a 'nectar guide' and is thought to attract insect pollinators that can see in UV light. This image was taken on a digital camera adapted to filter and detect UV light, resulting in a monochrome image. See image B804/4367 for the same flower seen in daylight.

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Size: 4028px × 2663px
Photo credit: © BJORN RORSLETT/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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