Cork Oak Small 163×320 Medium 327×640 Large 523×1024 Download Tiff Original 1226×2400 | (1.1 MB) Description Also known as Quercus suber. It is a medium-sized oak tree, and it is the primary source of cork for wine bottle stoppers. It is commonly found in southwest Europe and northwest Africa. Keywords cork, cork oak, evergreen oak tree, evergreen tree, Oak, oak tree, oak trees, Quercus, Quercus suber, suber, tree, trees Galleries Oak Trees, Trees: O-P Source: Nicholson, George The Illustrated Dictionary of Gardening, Div. VI (London, England: L. Upcott Gill, 1884)