Licence: Public Domain Mark
Credit: Leaves of oak (Quercus species). Watercolour drawing. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/V0043558ER/full/800%2C/0/default.jpg)
Licence: Public Domain Mark
Credit: Leaves of oak (Quercus species). Watercolour drawing. Wellcome Collection. Source: Wellcome Collection.