Delaware Wildflowers • Common names
Large Water-starwort
Callitriche heterophyllaPlantaginaceae — Plantain family
Native

There's not much more to a flower on this aquatic plant than a single stamen or a pistil with two styles.
White Clay Creek State Park -- Pump House RoadJuly 2004
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Photos copyright David G. Smith
Information from the Delaware Flora Checklist used with author's permission.