@misc{indiciaefb5a4518faa6,
  title = {George Engelmann : botanical notebook 45 : Polyanthus, Sagittaria, Echinodorus, Najadaceae, Najas, Potamogetonaceae, Cyperaceae, Gramineae — Illustration, [No.] 10279},
  year = {1859},
  url = {https://www.biodiversitylibrary.org/page/55965290},
  note = {Source identifier: page-55965290}
}