TY - ART TI - George Engelmann : botanical notebook 45 : Polyanthus, Sagittaria, Echinodorus, Najadaceae, Najas, Potamogetonaceae, Cyperaceae, Gramineae — Illustration, [No.] 10309 UR - https://www.biodiversitylibrary.org/page/55988921 ID - page-55988921 ER -