Flatstem Pondweed - Potamogeton zosteriformis
MNPS Threat Rank
Stems flattened, winged, branched. Submersed leaves linear, 5–20 cm × 2–5 mm; stipules 15–30 mm long, not sheathing. Floating leaves absent. Spikes 15–25 mm long, continuous. Tepals green, 1–2 mm long. Fruits 3–5 mm long, keeled with a curved beak (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
AK to NL south to CA, UT, KS, NY (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
- Additional ReferencesLegend: View Online Publication
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- Garrett, P.A. 1983. Relationships between benthic communities, land use, chemical dynamics, and trophic state in Georgetown Lake. Ph.D. Dissertation. Bozeman, MT: Montana State University. 136 p.
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.