The coloring material of madder, alizarin, is concentrated in the root. Source: Elizabeth Blackwell, Herbarium Blackwellianum. . ., vol. 3 (Nuerenberg, 1750-73), plate 326. [Web Link]

From The creation of color in eighteenth-century Europe by Sarah Lowengard

Creator(s)
Subjects
  • European: 1400-1800
Citable Link
  • The Madder Plant. The coloring material of madder, alizarin, is concentrated in the root. Source: Elizabeth Blackwell, Herbarium Blackwellianum. . ., vol. 3 (Nuerenberg, 1750-73), plate 326. [Web Link]