Four twigs with catkins, all from named types of poplar or aspen (Populus species). Chromolithograph by W. Dickes & co., c. 1855.

    • W. Dickes & Co.
    Date:
    [1855]
    Reference:
    24819i

    Licence: Public Domain Mark

    Credit: Four twigs with catkins, all from named types of poplar or aspen (Populus species). Chromolithograph by W. Dickes & co., c. 1855. Wellcome Collection. Source: Wellcome Collection.

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