@misc{indiciaeeace2eb2690b,
  title = {George Engelmann : botanical notebook 7 : Echinocactus, Echinopsis, and Cereus — Illustration, [No.] 1562 2},
  url = {https://www.biodiversitylibrary.org/page/54368645},
  note = {Source identifier: page-54368645}
}