United States, Maryland, Cecil, Plum Creek NHA site #1, along N bank of Plum creek, NW of Oldfield Pt. Rd. bridge about 150 yds from bridge along shore approx. midway between bridge and house
39.571346 -75.86718 +-210m.
at mud edge of Nuphar/Peltandra marsh with some Pontederia and Pontederia seedlings
Nuphar, Peltandra, Pontederia
100 plants counted, population approx. 150, no plants had lobed leaves, one plant (collected) in flower, 2 in bud