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*Najas minor Allioni. Subgenus: Caulinia. Section: Caulinia. Spinyleaf Naiad. Phen: Jul-Oct. Hab: Ponds, lakes, and reservoirs, particularly where eutrophic. Dist: Native of Eurasia. This species is apparently a rather recent introduction to North America, now widespread in e. North America.

Origin/Endemic status: Eurasia

Other Comments: Haynes (1979) reports that it is becoming more abundant in e. North America because of its tolerance for polluted, eutrophic waters.

Synonymy: = AqW, Ar, C, F, FNA22, G, GW1, Il, K1, K3, K4, Mi, Mo1, NE, NY, Pa, RAB, Tn, Va, W, WH3, WV, Haynes (1979); = n/a – Tat

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: OBL
  • Eastern Mountains and Piedmont: OBL
  • Great Plains: OBL
  • Midwest: OBL
  • Northcentral & Northeast: OBL

Heliophily: 8

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image of plant© Dan Spaulding, some rights reserved (CC BY-NC), uploaded by Dan Spaulding source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Dan Spaulding, some rights reserved (CC BY-NC), uploaded by Dan Spaulding source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Dan Spaulding, some rights reserved (CC BY-NC), uploaded by Dan Spaulding source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Radford, Ahles and Bell | Original Image ⭷

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