@misc{indiciaef6a2854b58ba,
  title = {George Engelmann : botanical notebook 9 : Echinocereus, Cereus, Eulychnia, Pilocereus — Illustration, [No.] 2143},
  url = {https://www.biodiversitylibrary.org/page/56150093},
  note = {Source identifier: page-56150093}
}