@misc{indiciaebabef00e64a3, title = {George Engelmann : botanical notebook 45 : Polyanthus, Sagittaria, Echinodorus, Najadaceae, Najas, Potamogetonaceae, Cyperaceae, Gramineae — Illustration, [No.] 10029}, url = {https://www.biodiversitylibrary.org/page/55927468}, note = {Source identifier: page-55927468} }