@misc{indiciae025116ba2a32,
  title = {George Engelmann : botanical notebook 45 : Polyanthus, Sagittaria, Echinodorus, Najadaceae, Najas, Potamogetonaceae, Cyperaceae, Gramineae — Illustration, [No.] 10139},
  url = {https://www.biodiversitylibrary.org/page/55964016},
  note = {Source identifier: page-55964016}
}