Persicaria hydropiperoides (Michx.) Small [ Polygonum hydropiperoides Michx.]
no HD illustration available (m1)
Persicaria hydropiperoides (Michx.) Small [ Polygonum hydropiperoides Michx.] [Polygonaceae]
Helen Sharp, Water-color Sketches Amer. Pl.: (1888-1910) [Helen Sharp]