Sciadopitys, commonly called kōyamaki trees, are a genus of conifers endemic to Japan. It is the sole living genus of umbrella pines in the family Sciadopityaceae. The oldest fossils of Sciadopitys are from the Late Cretaceous of Japan, and the genus was widespread in Laurasia during most of the Cenozoic, especially in Europe until the Pliocene. Sciadopitys has one extant member, S. verticillata. The genus existed in the United States as recently as the Pliocene.

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