TH FOTO-WERBUNG / SCIENCE PHOTO LIBRARY TH FOTO-WERBUNG / SCIENCE PHOTO LIBRARY
Autumn leaf. Close-up of the surface of a virginian creeper leaf showing autumn colour. The leaf's green pigment (chlorophyll) has been broken down, revealing red and yellow pigments that are usually hidden. The main vein (midrib) is down centre, and smaller veins can be seen as a pale network against the coloured leaf.
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