@misc{indiciaea7bb0e19f9af,
  title = {George Engelmann : botanical notebook 9 : Echinocereus, Cereus, Eulychnia, Pilocereus — Illustration, [No.] 2148 2},
  url = {https://www.biodiversitylibrary.org/page/56150109},
  note = {Source identifier: page-56150109}
}