@misc{indiciae107e03d22878,
  title = {George Engelmann : botanical notebook 45 : Polyanthus, Sagittaria, Echinodorus, Najadaceae, Najas, Potamogetonaceae, Cyperaceae, Gramineae — Illustration, [No.] 10151 2},
  url = {https://www.biodiversitylibrary.org/page/55968050},
  note = {Source identifier: page-55968050}
}