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

[London], [1855]

1 print : chromolithograph

1. great white poplar, Populus alba 2. grey p. P. canescens 3. trembling p. or aspen P. tremula 4. black p. P. nigra W. Dickse & co del et sc Lettering on the print includes a number for each plant and the plate number

Wellcome Collection 24819i