Then it was a deep, mysterious stream, meandering through unbroken forests, walled up on either side in green shade, the trees of centuries leaning over to welcome and shelter the voyager, flowing silently in great sweeps of dark water, with, at long intervals, a lagoon setting back into the wider forest around, enameled with pond lilies and sagittaria, and the refuge of undisturbed waterfowl and browsing deer.
"The Autobiography of a Journalist, Volume I"
William James Stillman
They belong to the arrowhead, sagittaria, found in shallow ponds or slow streams.
"Seed Dispersal"
William J. Beal
It flows out of the "sea" unhindered now save by pickerel weed and sagittaria, rush and meadow grasses, and in woodsy places by brook alder, clethra, huckleberry and spice-bush that lean into it as they wrestle with greenbrier and clematis.
"Old Plymouth Trails"
Winthrop Packard