Stock photography, photos: Bur Oak Acorn Stock photos of Close-up of a Bur oak acorn. The scientific name for the tree is Quercus macrocarpa michx Photograph: © Jim Lane Click for a larger image and more information Keywords associated with this stock photo: acorn, brown , bur oak, burr, close up, closeup, close-up, color, colour, cut out, cutout, cut-out, fruit, horizontal, mast, nut, oak, one, seed, single, tree, white background