ゼンマイ科の分布

概要

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The distributions of Osmundaceae are synthesized based on phylogenetic relationships. The distribution patterns may reflect the long evolutionary and geographic history of the family. They are divided into worldwide (in Osmunda subgenus Osmunda), eastern Asian-eastern North American (in Osmundastrum and Osmunda subgenus Claytosmunda), Southern Hemispheric (in Leptopteris and Todea), and Asian (in Osmunda subgenus Plenasium). Osmunda regalis is worldwide while the closely related O. japonica is eastern Asian, and both occur in the Himalayas. The eastern Asian-eastern North American pattern is seen in each of the remotely related Osmundastrum cinnamoneum and Osmunda claytoniana. The Southern Hemispheric pattern is shared by the sister genera Leptopteris and Todea, but it does not necessarily support a hypothesis for the Southern Hemispheric origin of the whole family.
国立科学博物館の論文