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Class
Monocotyledoneae (Monocots)
Family
Potamogetonaceae (Pondweed Family)
State Protection
Endangered
Federal Protection
Not Listed
State Conservation Status Rank
S1
Global Conservation Status Rank
G5

Summary

State Ranking Justification

There are 2 verified occurrences, 17 historical occurrences.

Conservation and Management

Habitat

Habitat

In New York, Potamogeton strictifolius is known from shallow water habitats of both natural and artificial lakes (New York Natural Heritage Program 2011). Alkaline waters (Crow and Hellquist 2001). Alkaline waters of lakes and slow-moving streams (FNA 2000).

Associated Ecological Communities

  • Impounded marsh
  • Impounded swamp*
  • Mesotrophic dimictic lake*
  • Reservoir/artificial impoundment*

Associated Species

  • Brasenia schreberi (water-shield)
  • Ceratophyllum demersum (common coon-tail)
  • Elodea canadensis (Canada waterweed)
  • Heteranthera dubia (water star-grass)
  • Lemna minor (common duckweed)
  • Lemna trisulca (star duckweed)
  • Myriophyllum spicatum (Eurasian water milfoil)
  • Najas flexilis (common water-nymph, common naiad)
  • Najas guadalupensis (Guadalupe water-nymph, Guadalupe naiad)
  • Nuphar variegata (common yellow pond-lily, common spatter-dock)
  • Potamogeton crispus (curly pondweed)
  • Potamogeton gramineus (grass-leaved pondweed)
  • Potamogeton natans (floating-leaved pondweed)
  • Potamogeton pusillus (common narrow-leaved pondweed)
  • Potamogeton robbinsii (Robbins's pondweed, fern pondweed)
  • Ruppia maritima (widgeon-grass, ditch-grass)
  • Sagittaria
  • Sparganium
  • Spirodela polyrrhiza
  • Stuckenia pectinata (Sago pondweed)
  • Trapa natans (water-chestnut)
  • Utricularia macrorhiza
  • Vallisneria americana (water-celery, tape-grass)

Range

New York State Distribution

Central and eastern New York. New York is near the eastern edge of its range.

Identification Comments

Identifying Characteristics

STRAIGHT LEAVES

Best Time to See

It is best to survey for Northern Pondweed from late July through September, when it is in fruit.

  • Vegetative
  • Fruiting

The time of year you would expect to find Straight-leaved Pondweed vegetative and fruiting in New York.

Taxonomy

Straight-leaved Pondweed
Potamogeton strictifolius Benn.

  • Kingdom Plantae
    • Phylum Anthophyta
      • Class Monocotyledoneae (Monocots)
        • Order Najadales
          • Family Potamogetonaceae (Pondweed Family)

Additional Common Names

  • Pondweed

Synonyms

  • Potamogeton x longiligulatus
  • Potamogeton strictifolius var. rutiloides Fern.
  • Potamogeton pusillus var. pseudorutilus Benn.
  • Potamogeton rutilis auct. non Wulf. ex R. & S.

Additional Resources

References

Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. The New York Botanical Garden, Bronx, New York. 910 pp.

Hellquist, C.B. and G.E. Crow 1980. Aquatic Vascular Plants of New England: Part 1. Zosteraceae, Potamogetonaceae, Zannichelliaceae, Najadaceae. New Hampshire Agricultural Experiment Station University of New Hampshire. Station Bull. 515.

Holmgren, Noel. 1998. The Illustrated Companion to Gleason and Cronquist's Manual. Illustrations of the Vascular Plants of Northeastern United States and Adjacent Canada. The New York Botanical Garden, Bronx, New York.

Mitchell, Richard S. and Gordon C. Tucker. 1997. Revised Checklist of New York State Plants. Contributions to a Flora of New York State. Checklist IV. Bulletin No. 490. New York State Museum. Albany, NY. 400 pp.

New York Natural Heritage Program. 2019. New York Natural Heritage Program Databases. Albany, NY.

Ogden, E.C. 1974. Anatomical patterns of some aquatic vascular plants of New York. New York State Museum Bull. 424.

Seymour, F.C. 1982. The flora of New England. A manual for the identification of all vascular plants including ferns and fern allies growing without cultivation in New England. Moldenka, Plainfield, New Jersey.

Weldy, T. and D. Werier. 2010. New York flora atlas. [S.M. Landry, K.N. Campbell, and L.D. Mabe (original application development), Florida Center for Community Design and Research http://www.fccdr.usf.edu/. University of South Florida http://www.usf.edu/]. New York Flora Association http://newyork.plantatlas.usf.edu/, Albany, New York

Links

About This Guide

Information for this guide was last updated on: August 9, 2011

Please cite this page as:
New York Natural Heritage Program. 2019. Online Conservation Guide for Potamogeton strictifolius. Available from: https://guides.nynhp.org/straight-leaved-pondweed/. Accessed March 20, 2019.

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