@misc{indiciae7b6cb576e6bf,
  title = {George Engelmann : botanical notebook 9 : Echinocereus, Cereus, Eulychnia, Pilocereus — Illustration, [No.] 2073},
  url = {https://www.biodiversitylibrary.org/page/56136789},
  note = {Source identifier: page-56136789}
}