Birder20714:
Comb-leaved Mermaidweed ((Proserpinaca palustris) 07-13-1982 Adkins VI, TNC Nassawango Preserve, Wicomico Co. MD 1
Birder20714:
Comb-leaved Mermaidweed (Proserpinaca pectinata) 09-06-2013 Andover Flatswoods, Queen Anne's Co. MD 1
Birder20714:
Marsh Mermaidweed (Proserpinaca palustris) 08-29-2013 Back Shelltown Road, Somerset Co. MD
Birder20714:
Marsh Mermaidweed (Proserpinaca palustris) 09-01-1984 Bennett, Cape May Cp. NJ 1
Birder20714:
Marsh Mermaidweed (Proserpinaca palustris) 9-06-2013 Andover Flatswoods, Queen Anne's Co. MD 1
Birder20714:
Eurasian Watermilfoil (Myriophyllum spicatum Linnaeus) 09-19-2017 C&O Canal--Oldtown, Allegany Co. MD 3