Polygalaceae, Rutaceae, chromolithograph, published in 1895 - stock illustration

Polygalaceae, Rutaceae: 1) Milkwort (Polygala vulgaris), a-with blue blossoms, b-with red blossoms, c-blossom, d-stamens, e-closed fruit capsula; 2) Milkwort (Polygala amara), a-with blue blossoms, b-with red blossoms, c-blossom, d-pistil (cross section), e-opened fruit capsula; 3) Rue (Ruta graveolens), a-stem tip, b-fruit. Chromolithograph, published in 1895.