Spring crocus in UV light

Spring crocus in UV light

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This image is part of the feature Uv Flowers


Caption: Spring crocus in UV light. Photograph of spring crocus (Crocus vernus) flower coloured to show areas that reflect (yellow) or absorb (dark areas) ultraviolet (UV) light. The UV pattern, known as a 'nectar guide', is thought to help attract pollinating insects, which can see in UV light. This image was taken on a digital camera adapted to filter and detect UV light. The resulting monochrome image was coloured on  a computer. UV light is invisible to humans and does not have a true colour. See image B804/4381 for normal daylight version.

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Keywords: angiosperm, angiosperms, anther, anthers, biological, biology, botanical, botany, bull's-eye, coloured, countryside, crocus vernus, electromagnetic spectrum, europe, false-coloured, filament, flora, floral, flower, garden, honey guide, inflorescence, liliaceae, mark, marks, nature, nectar guide, one, petal, petals, plant, pollen, pollination, single, spectrum, spring crocus, stamen, ultraviolet, uv, uv absorbance, uv absorbing, uv pattern, uv photography, uv reflectance, uv reflecting

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