TY - ART TI - George Engelmann : botanical notebook 45 : Polyanthus, Sagittaria, Echinodorus, Najadaceae, Najas, Potamogetonaceae, Cyperaceae, Gramineae — Illustration, [No.] 10054 UR - https://www.biodiversitylibrary.org/page/55904698 ID - page-55904698 ER -