erodium

Updated: May 7, 2025

Even in wild plants, as in Erodium, Calluna, Brunella and others, a botanist may recognize the rare white-flowered variety by the pure green color of the leaves, at times when it is not in flower. Some sorts of peas bear colored flowers and a red mark on the stipules of their leaves.

Hugo de Vries - Species and Varieties, Their Origin by Mutation