TY - ART TI - George Engelmann : botanical notebook 45 : Polyanthus, Sagittaria, Echinodorus, Najadaceae, Najas, Potamogetonaceae, Cyperaceae, Gramineae — Illustration, [No.] 10230 verso UR - https://www.biodiversitylibrary.org/page/55983721 ID - page-55983721 ER -