The ferns of Great Britain and their allies, the club-mosses, pepperworts, and horsetails / by Anne Pratt ; published under the direction of the Committee of General Literature and Education, appointed by the Society for Promoting Christian Knowledge.

Licence: Public Domain Mark

Credit: The ferns of Great Britain and their allies, the club-mosses, pepperworts, and horsetails / by Anne Pratt ; published under the direction of the Committee of General Literature and Education, appointed by the Society for Promoting Christian Knowledge. Source: Wellcome Collection.