brittleleaf naiad

Najadales > Najadaceae > Najas minor All.
Synonym(s): brittle waternymph, brittleleaf naiad, European naiad, spinyleaf naiad, slender-leaved naiad

Brittleleaf naiad is an annual forb that is native to Europe. The highly branched stems can grow up to 4 ft. (1.2 m) in length and fragment easily, hence the common name. Leaves are opposite, linear, approximately 1 in. (2.5 cm) in length with prominent teeth along the margins. Flowering occurs in late spring to early summer, when small flowers develop in the axils of the leaves. Fruit are single-seeded. Germination of the seeds occurs in early spring. Brittleleaf naiad can be confused with coon's tail (Ceratophyllum spp.), but can be distinguished by the leaf arrangement. The leaves of coon's tail are arranged in whorls of 4 or 5, instead of the opposite arrangement of brittleleaf naiad. This invasive was first collected in the United States in the 1930s.


Identification, Biology, Control and Management Resources


Selected Images from Invasive.org

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Plant(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
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Plant(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
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Plant(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
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Plant(s);
Troy Evans, , Bugwood.org
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Plant(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
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Diagram or Graphic; USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service.
USDA PLANTS Database, USDA NRCS PLANTS Database, Bugwood.org
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Invasive Reference(s):

Check Invasive.org for most current lists.
  • Alabama - Noxious Weed Law
  • Connecticut - Noxious Weed Law
  • Georgia - EPPC list
  • Maine - Noxious Weed Law
  • Massachusetts - Noxious Weed Law
  • Rhode Island - Noxious Weed Law
  • South Carolina - Noxious Weed Law
  • Washington - Noxious Weed Law
  • Invasive Plants of the Upper Midwest
  • Invasive Plant Atlas of New England


External Links


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USDA Forest Service Bugwood University of Georgia