Oak leaves on a twig. The oak tree (Quercus robur) is a deciduous tree (a tree that loses its leaves in the autumn). The leaves contain the green pigment chlorophyll that is used to trap the energy of sunlight during photosynthesis. A network of veins carries water and nutrients in and out of the leaves.

Photo website with Rights Managed and Royalty Free stock photos, images, illustrations and footage available for download immediately for commercial and editorial uses. Aflo is a leading independent supplier and producer of stock pictures and visual content. Search and find high quality images and video for design, print, web-use and publishing. Buy photos from our extensive collection of model released and property released sports images. Search some of the most beautiful travel and landscape pictures from our own photographers and license from our large collection of content, modern and archive, focusing on Japan. We provide free research. Register for personal account management and for full use of our Stock Photography website and start to download images now.