The Ceylon moss. Communications read to the Royal Medico-Botanical Society of London / And pub. with its permission, by George G. Sigmond, and by Frederic Farre.

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The Ceylon moss. Communications read to the Royal Medico-Botanical Society of London / And pub. with its permission, by George G. Sigmond, and by Frederic Farre. Public Domain Mark. Source: Wellcome Collection.