Fr: potamot très ténu, potamot de Berchtold
Provincial Status: LN
Range: Circumboreal; thr. Nfld., disj. in cLab.; aq.
[=Potamogeton berchtoldii Fieber]
[=Potamogeton berchtoldii Fieber subsp. tenuissimus (Mertens & W.D.J.Koch) Calder & Roy L.Taylor]
[=Potamogeton berchtoldii Fieber var. acuminatus Fieber]
[=Potamogeton berchtoldii Fieber var. berchtoldii]
[=Potamogeton berchtoldii Fieber var. colpophilus (Fernald) Fernald]
[=Potamogeton berchtoldii Fieber var. groenlandicus (Hagst.) Feilberg]
[=Potamogeton berchtoldii Fieber var. lacunatus (Hagstr.) Fernald]
[=Potamogeton berchtoldii Fieber var. major Nakai]
[=Potamogeton berchtoldii Fieber var. mucronatus Fielding]
[=Potamogeton berchtoldii Fieber var. polyphyllus (Morong) Fieber]
[=Potamogeton berchtoldii Fieber var. ramosissimus Fieber]
[=Potamogeton berchtoldii Fieber var. tenuissimus (Mertens & W.D.J.Koch) Fernald]
[=Potamogeton fieberi Rouy]
[=Potamogeton groenlandicus Hagstr.]
[=Potamogeton lacunatus Hagstr.]
[=Potamogeton lacunatus Hagstr. forma novae-angliae Hagstr.]
[=Potamogeton pusillus L. forma. tenuissimus (Mertens & W.D.J.Koch) Hagstr.]
[=Potamogeton pusillus L. subsp. groenlandicus (Hagstr.) Böcher]
[=Potamogeton pusillus L. subsp. tenuissimus (Mertens & W.D.J.Koch) R.R.Haynes & Hellq.]
[=Potamogeton pusillus L. var. berchtoldii (Fieber) Nyman]
[=Potamogeton pusillus L. var. macrocarpus Rouy]
[=Potamogeton pusillus L. var. major Fr.]
[=Potamogeton pusillus L. var. microcarpus Rouy]
[=Potamogeton pusillus L. var. polyphyllus Morong]
[=Potamogeton pusillus L. var. tenuissimus Mertens & W.D.J.Koch]
[A 1950 report of Potamogeton foliosus from Goose Bay, cLab., by Gillett and Findlay, was revised by S.G. Hay to P. pusillus var. tenuissimus, now known as P. berchtoldii.]