A Checklist of the Vascular Plants of Washington State
Hosted by the University of Washington Herbarium, Burke Museum
Hosted by the University of Washington Herbarium, Burke Museum
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Potamogetonaceae » Potamogeton richardsonii
Potamogeton richardsonii (A. Benn.) Rydb.[FNA22, HC, HC2]
clasping-leaved pondweed, Richardson's pondweed
Publication: Bulletin of the Torrey Botanical Club. 32: 599. 1905.
Origin: Native
Herbarium search: CPNWH
Notes: FNA22: "Potamogeton richardsonii is quite similar to P. perfoliatus. Specific characteristics to separate the two species are the shape of the leaf blade apex, acute in P. richardsonii and obtuse in P. perfoliatus, and the condition of the stipules, disintegrating between the veins leaving fibrous strands in P. richardsonii , and the entire stipule, including the veins, disintegrating in P. perfoliatus.
Two hybrids, Potamogeton gramineus x P. richardsonii (= P. x hagstroemii A. Bennett [as hagstromii]) and P. nodosus x P. richardsonii (= P. x rectifolius A. Bennett), have been described."
Last updated 9/17/2023 by David Giblin.
Synonyms & Misapplied Names:
Potamogeton perfoliatus L. ssp. richardsonii (A. Benn.) Hultén
Potamogeton perfoliatus L. var. richardsonii A. Benn.
