Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Stuckenia filiformis subsp. filiformis

Stuckenia filiformis subsp. alpina
Photo is of parent taxon

fineleaf pondweed
Photo is of parent taxon

fineleaf pondweed, potamot filiforme alpin, slender-leaf pondweed
Stems

10–30 cm.

10–30 cm.
Leaves

stipules persistent, those on proximal portion of stem tightly clasping or slightly enlarged; 0.2–0.5 mm wide.

stipules persistent;

those on proximal portion of stem tightly clasping or slightly enlarged, to 1 mm wide.
Inflorescences

peduncles with flowers and/or fruits 4 cm or more apart.

peduncles with flower and/or fruits adjacent or separated by less than 2 cm.
Fruits

common.

common.
2n

= 78.

Stuckenia filiformis subsp. filiformis

Stuckenia filiformis subsp. alpina
Phenology Flowering summer. Flowering spring–early fall.
Habitat Calcareous waters of ponds, lakes, and streams Calcareous, saline, or brackish shallow to deep waters of ponds, lakes, streams, ditches, and coastal inshore waters
Elevation 0–915 m (0–3000 ft) 0–3280 m (0–10800 ft)
Distribution
from FNA
AK; NT; YT; Greenland; Europe; Asiaasia
[BONAP county map]
from FNA
AK; AZ; CA; CO; ID; ME; MI; MN; MT; ND; NE; NH; NJ; NM; NV; NY; OH; OR; PA; SD; UT; VT; WA; WI; WY; AB; BC; MB; NB; NL; NS; NT; NU; ON; PE; QC; SK; YT; Greenland; Asia
[BONAP county map]
Discussion

No specimens have been seen from British Columbia or Nunavut, but the subspecies is to be expected there.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 22. FNA vol. 22.
Parent taxa Potamogetonaceae > Stuckenia > Stuckenia filiformis Potamogetonaceae > Stuckenia > Stuckenia filiformis
Sibling taxa
S. filiformis subsp. alpina, S. filiformis subsp. occidentalis
S. filiformis subsp. filiformis, S. filiformis subsp. occidentalis
Synonyms Potamogeton marinus, Potamogeton borealis, Potamogeton filiformis var. alpinus, Potamogeton filiformis var. borealis, Potamogeton filiformis var. macounii, Potamogeton interior, Potamogeton marinus var. alpinus, Potamogeton marinus var. macounii
Name authority unknown (Blytt) R. R. Haynes: Novon 8: 241. (1998)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America, OregonFlora

The species comparison tool is brought to you by:
Northwest Wildflowers