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Montana Field Guide

Montana Field Guides

Richardson's Pondweed - Potamogeton richardsonii


Global Rank: G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 6

External Links






 
General Description
Stems terete, little branched. Submersed leaves sessile, clasping, ovate to lanceolate with wavy margins, 2–10 cm × 6–20 mm; stipules 1–2 cm long, not sheathing, quickly fraying. Floating leaves absent. Spikes 1–3 cm long, continuous. Tepals green, ca. 2 mm long. Fruits 2–4 mm long, obscurely keeled with an erect beak (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
AK to NL south to CA, CO, IA and NY (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 470

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Shallow to deep, sometimes alkaline water of ponds, lakes, slow rivers; valleys to montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Richardson's Pondweed — Potamogeton richardsonii.  Montana Field Guide.  .  Retrieved on , from