3 Pages in Charles Darwin's Library associated with "flora - Betula"

The regions of vegetation, being an analysis of the distribution of vegetable forms over the surface of the globe in connection with climate and physical agents
By:
Publication info: London, G.J. Palmer, 1843
Pages: Page 58 Page 58
Untersuchungen über die Bedeutung der Nektarien in den Blumen
By: Kurr, Johann Gottlob von.
Publication info: Stuttgart, Henneschen Buchhandlung, 1833
Pages: Page 95