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Updated: May 11, 2025
Walchia piniformis, Schloth. Permian, Saxony. Branch. b. Twig of the same. c. About 18 or 20 species of plants are known in the Permian rocks of England. None of them pass down into the Carboniferous series, but several genera, such as Alethopteris, Neuropteris, Walchia, and Ullmania, are common to the two groups.
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