Brittle Naiad (Najas minor)
Where did it come from?
- Originates from Europe, Turkey, Northern Africa, India and Japan.
Where can it be found in South Dakota?
- Currently found in McCook Lake in Union County.
What does it look like?
- They grow below the water surface. In deep water they have long wavy stems, and in shallow water they are dense and
bushy similar to milfoil and Curlyleaf Pondweed.
- It is often times mistaken for Chara. Chara has a musky smell when crushed, and Brittle Naiad does not.
Why are Brittle Naiad a problem?
- It can become a problem when it becomes overly abundant in some areas, but for the most part it’s not a nuisance and
is best left alone.
How are Brittle Naiad spread?
- Reproduces by fragmentation, plant fragments easily transported in livewells, bilge water, and on boat trailers.
Check outAquatic Nuisance Species Prevention on ways to prevent the spread
of Aquatic Nuisance Species
Brittle Naiad links
Link to USDA Brittle Naiad Page
Aqua Plant Brittle Naiad Page
Pictures of Brittle Naiad
United States Brittle
Naiad Distribution Map
South Dakota Brittle Naiad Distribution Map
Click here to report Brittle Naiad
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Related Links
ANS Management in North America
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an Aquatic Nuisance Species?
Aquatic Nuisance Species
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SD ANS Watch List "The Terrible Ten"
SD Noxious Weed List
SD Invasive Species Laws and
Regulations
SD Cooperative Boat Wash
Program
SD Infested Waters List
South Dakota ANS
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