Montana Field Guide

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Montana Field Guides

Home - Other Field Guides
- Kingdom - Plants - Plantae
  - Division - Flowering Plants - Anthophyta
    - Class - Monocots - Monocotyledoneae
      - Order - Pondweed / Pod- / Arrow- / Ditch-grasses - Najadales
        
        Family - Water-nymph Family - Najadaceae
        
        Species - Slender Naiad - Najas flexilis

Slender Naiad - Najas flexilis

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Native Species

Global Rank: G5
State Rank: S4
C-value: 7

Agency Status
USFWS:
USFS:
BLM:

External Links

General Description

Stems 5–40 cm. Leaves 10–35 mm long; the dilated base 2–3 mm wide. Female flowers 2–5 mm long. Achenes ca. 3 mm long; seeds smooth, shiny, sometimes minutely spotted (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Montana Range Range Descriptions

Native

Range Comments

BC to NL south to CA, NV, KY and VA (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database

Number of Observations: 410

(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

Usually shallow, often alkaline water of lakes, sloughs; valleys (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References

Literature Cited AboveLegend: View Online Publication
- eFloras. No Date. Published on the Internet http://www.efloras.org. Missouri Botanical Garden Herbarium, St. Louis, Missouri and Harvard University Herbarium, Cambridge, Massachusetts
- Flora of North America Editorial Committee (FNA). 2000. Flora of North America north of Mexico. Vol. 22. Magnoliophyta: Alismatidae, Arecidae, Commelinidae (in part), and Zingiberidae. Oxford Univ. Press, New York. xxiii + 352 pp.
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Slender Naiad — Najas flexilis. Montana Field Guide. Montana Natural Heritage Program. Retrieved on February 2, 2023, from https://FieldGuide.mt.gov/speciesDetail.aspx?elcode=PMNAJ01020