Stuckenia filiformis subsp. alpina

(Blytt) R. R. Haynes

Novon 8: 241. 1998.

Common names: Potamot filiforme alpin
Basionym: Potamogeton marinus Rafinesque in M. N. Blytt and A. G. Blytt, Norges Fl. 1: 370. 1861
Synonyms: Potamogeton borealis Persoon Potamogeton filiformis var. alpinus (M. N. Blytt) Ascherson & Graebner Potamogeton filiformis var. borealis (Rafinesque) H. St. John Potamogeton filiformis var. macounii Morong Potamogeton interior Potamogeton marinus var. alpinus (J. W. Robbins) Morong Potamogeton marinus var. macounii Morong
Treatment appears in FNA Volume 22.

Stems 10–30 cm. Leaves: stipules persistent; those on proximal portion of stem tightly clasping or slightly enlarged, to 1 mm wide. Inflorescences: peduncles with flower and/or fruits adjacent or separated by less than 2 cm. Fruits common. 2n = 78.

Phenology: Flowering spring–early fall.
Habitat: Calcareous, saline, or brackish shallow to deep waters of ponds, lakes, streams, ditches, and coastal inshore waters
Elevation: 0–3280 m


V22 134-distribution-map.jpg

Greenland, Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Nunavut, Ont., P.E.I., Que., Sask., Yukon, Alaska, Ariz., Calif., Colo., Idaho, Maine, Mich., Minn., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.Dak., Ohio, Oreg., Pa., S.Dak., Utah, Vt., Wash., Wis., Wyo., Asia.


No specimens have been seen from Maryland, but the subspecies is to be expected there.

One hybrid, P. filiformis × P. pectinatus (= P. × suecicus K. Richter), with this species as a putative parent has been described under the genus Potamogeton.

Selected References


Lower Taxa

Robert R. Haynes +  and C. Barre Hellquist +
(Blytt) R. R. Haynes +
Potamogeton marinus +
Potamot filiforme alpin +
Greenland +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Nunavut +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Alaska +, Ariz. +, Calif. +, Colo. +, Idaho +, Maine +, Mich. +, Minn. +, Mont. +, Nebr. +, Nev. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, N.Dak. +, Ohio +, Oreg. +, Pa. +, S.Dak. +, Utah +, Vt. +, Wash. +, Wis. +, Wyo. +  and Asia. +
0–3280 m +
Calcareous, saline, or brackish shallow to deep waters of ponds, lakes, streams, ditches, and coastal inshore waters +
Flowering spring–early fall. +
Potamogeton borealis +, Potamogeton filiformis var. alpinus +, Potamogeton filiformis var. borealis +, Potamogeton filiformis var. macounii +, Potamogeton interior +, Potamogeton marinus var. alpinus +  and Potamogeton marinus var. macounii +
Stuckenia filiformis subsp. alpina +
Stuckenia filiformis +
subspecies +