The Sawtooth Oak (Quercus acutissima) is an oak originally native to eastern Asia, in China, Korea an Japan. It is now also present in North America. It is closely related to the Turkey Oak, classified with it in Quercus sect. Cerris, a section of the genus characterised by shoot buds surrounded by soft bristles, bristle-tipped leaf lobes, and acorns that mature in about 18 months.