Sciadopitys verticillata, the kōyamaki or Japanese umbrella-pine, is a unique conifer endemic to Japan, Sakhalin, and Kuril Islands.

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.

It is an evergreen tree that can grow 15–27 m tall, with brown main shoots bearing whorls of 7–12 cm long flexible green cladodes that look like, and perform the function of, leaves, but are actually composed of stem tissues.

The cones are 6–11 cm long, mature in about 18 months, with flattish scales that open to release the seeds.

[citation needed] The plant was first introduced to the UK by John Gould Veitch in September 1860.