@misc{indiciae45c16222cc37,
  title = {Leçons de botanique / Leçons de botanique. : [Supplementary material in Charles Darwin's copy] — Illustration, Pl. 20},
  year = {1841},
  url = {https://www.biodiversitylibrary.org/page/33856465},
  note = {Source identifier: page-33856465}
}