*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
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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