Equisetum laevigatum A. Braun. Smooth Scouring-Rush. Phen: May-Jul. Hab: Moist areas. Dist: QC and BC south to NY, w. PA, s. OH, s. IN, s. IL, AR (Peck 2011), e. TX, NM, AZ, CA, and n. Mexico.
Origin/Endemic status: Native
Other Comments: There are old reports, repeated in RAB, and S, of this species farther south; documentation of these reports is not known.
Synonymy: = Ar, C, ETx1, FNA2, G, GrPl, Il, K1, K3, K4, Mo1, Pa, S13, Sf, TxFerns; = Hippochaete laevigata (A.Braun) Farw.; > Equisetum hyemale L. var. intermedium A.A.Eaton – F; > Equisetum kansanum Schaffner – F, Tx; > Equisetum laevigatum A.Braun – Tx
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