@misc{indiciae7ba3ef819483, title = {George Engelmann : botanical notebook 45 : Polyanthus, Sagittaria, Echinodorus, Najadaceae, Najas, Potamogetonaceae, Cyperaceae, Gramineae — Illustration, [No.] 10262B}, url = {https://www.biodiversitylibrary.org/page/55988314}, note = {Source identifier: page-55988314} }