@misc{indiciaecf6f7de6b7b2,
  title = {George Engelmann : botanical notebook 9 : Echinocereus, Cereus, Eulychnia, Pilocereus — Illustration, [No.] 2062},
  url = {https://www.biodiversitylibrary.org/page/56139902},
  note = {Source identifier: page-56139902}
}