Coltsfoot in UV light

Coltsfoot in UV light

B838/1220 Rights Managed

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Caption: Coltsfoot in UV light. Coloured photograph of coltsfoot (Tussilago farfara) flowers showing the pattern of absorbed (dark areas) and reflected (yellow) ultraviolet (UV) light on the flower heads. These 'bull's-eye' patterns are known as 'nectar guides' and help to attract pollinating insects, which can see UV light. Humans are unable to see these patterns. This image was taken using a digital camera adapted to filter and detect UV light. The resulting monochrome image was coloured on a computer. UV light is outside the visible spectrum and does not have a true colour. See image B838/1219 for normal daylight version.

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Keywords: angiosperm, angiosperms, asteraceae, biological, biology, botanical, botany, bull's-eye, bulls-eye, coloured, colt's foot, colts foot, coltsfoot, compositae, countryside, electromagnetic spectrum, europe, european, false-coloured, flora, floral, flower, honey guide, inflorescence, many, mark, marks, multiple, nature, nectar guide, petal, petals, plant, pollination, spectrum, tussilago farfara, ultraviolet, uv, uv absorbance, uv absorbing, uv pattern, uv photography, uv reflectance, uv reflecting, yellow flower, yellow flowers

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