@misc{indiciae6ab09b1877d1,
  title = {George Engelmann : botanical notebook 45 : Polyanthus, Sagittaria, Echinodorus, Najadaceae, Najas, Potamogetonaceae, Cyperaceae, Gramineae — Illustration, [No.] 10327},
  year = {1860},
  url = {https://www.biodiversitylibrary.org/page/55983664},
  note = {Source identifier: page-55983664}
}