Umbrella Pine, Sciadopitys verticillata : Past and Present Distribution in Japan

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Abstract
The umbrella pine, Sciadopitys verticillata S. and Z., a native Japanese conifer species and the only present member of the genus Sciadopitys, has become rapidly restricted in its geographic distribution since the beginning of intensified human activities. In Japan the genus was more widely distributed throughout the Pliocene and in the postglacial hypsithermal and slightly later times (R IIIa). In other parts of the world the genus has not appeared in the fossil record since the early Pleistocene. Conservation of this species is needed.

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