Publication: Mem. Amer. Acad. Arts, n. s. 17: 51, plate 28, figs. a–c, plate 32, plate 28, fig. 5, plate 32. 1932.

Origin: Native

Herbarium search: CPNWH

Notes: Known in WA from one collection in 1933 from Pierce Co.

FNA22: "Potammogeton foliosus subsp. fibrillosus is known from the warm waters of the northwestern United States. It differs from subsp. foliosus by the stipular tissue between the veins decomposing, leaving only strands formed by the fibrous veins. In addition, nodal glands are quite common."

Last updated 9/17/2023 by David Giblin.