Najas guadalupensis & Najas flexilis
Naiads or Water nymphs are native plant species to Connecticut. A native plant is one that occurs naturally in a particular habitat, ecosystem or region without human introduction. It is well adapted to that region’s water chemistry, soil, moisture and weather conditions. It grows submerged underwater, with two unsegmented leaves per node along the stem. Leaf blades measure 3 to 33 mm in length, and 0.2 to 2.1 mm in width. It has no flowers and the fruit is dry and splits open when ripe.
Plant Native Species, Connecticut, National Audubon Society http://ct.audubon.org/plant-native-species-0
Najas guadalupensis, Go Botany, New England Wildflower Society https://gobotany.newenglandwild.org/species/najas/guadalupensis/