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 berchtoldii
Last updated 9/16/2023 by David Giblin.
Potamogeton berchtoldii Fieber[HC, HC2]
Berchtold's pondweed
Publication: B.V.von Berchtold & P.M.Opiz, Oekon.-Techn. Fl. Böhm. 2(1): 277. 1838.
Origin: Native
selected vouchers: WTU
Notes: FNA22: "Potamogeton pusillus subsp. tenuissimus is the most common linear-leaved subspecies of the family in temperate North America. Whenever one finds a linear-leaved pondweed with 1--5 rows of lacunae on each side of the midvein, chances are that it is subsp. tenuissimus.
Only Potamogeton obtusifolius could be confused with the taxon, and it can be separated by having its cylindric inflorescence, whereas subsp. tenuissimus has a capitate inflorescence."
References: (none)
Synonyms & Misapplied Names:
Potamogeton berchtoldii Fieber var. colpophilus (Fernald) Fernald
Potamogeton berchtoldii Fieber var. lacunatus (Hagstr.) Fernald
Potamogeton berchtoldii Fieber var. polyphyllus (Morong) Fernald
Potamogeton berchtoldii Fieber var. tenuissimus (Mertens & W.D.J. Koch) Fernald
Potamogeton pusillus L. ssp. tenuissimus (Mertens & W.D.J. Koch) R.R. Haynes & Hellq.[FNA22]
Potamogeton pusillus L. var. tenuissimus Mertens & W.D.J. Koch[JPM]
