This pondweed has not yet been identified in Conway Lake but keep an eye out - there is an invasive (Curly Leaf Pondweed) which looks very similar.
Clasping-Leaf Pondweed (Potamogeton perfoliatus) grows from robust creeping perennial rhizome that produces round stems up to 10 ft long. The leaves are oval and translucent, with no stalk, 3/4 to – 4 1/2 inches long and 3/4 to – 1 1/2 inches wide, clasping the stem , a flat apex, and 5-12 veins on either side of the midrib. They vary considerably in color and may be bright green, dark green, yellowish, olive or brownish green (Excepted from Wikipedia). To date (2021), clasping-leaf pondweed has not been found in Conway Lake.
Clasping Leaf Pondweed may be confused with other species of the Potamogeton genus including curly-leaf pondweed (exotic). Leaves on curly-leaf pondweed, however, do not clasp the stem as does this pondweed.