Three flowering plants, including common heather (Calluna vulgaris) and an orchid (Orchidaceae species). Colour nature print by A. Auer, c. 1853.

Licence: Public Domain Mark

Credit: Three flowering plants, including common heather (Calluna vulgaris) and an orchid (Orchidaceae species). Colour nature print by A. Auer, c. 1853. Wellcome Collection. Source: Wellcome Collection.