Najas gracillima (A. Braun ex Engelmann) Magnus. Subgenus: Caulinia. Section: Caulinia. Slender Naiad, Bushy Naiad. Phen: Jul-Oct. Hab: Ponds, lakes, slow-moving streams. Dist: NS west to MN, south to NC, AL, and MO; disjunct in CA (where likely alien).

Origin/Endemic status: Native

Other Comments: Haynes (1979) reports that this species cannot tolerate pollution and is apparently declining in abundance.

Synonymy: = C, F, FNA22, G, Il, K1, K3, K4, Mi, Mo1, NE, NY, Pa, RAB, Tn, Va, W, WV, Crow & Hellquist (2000a), Haynes (1979)

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