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Equisetum laevigatum A. Braun. Common name: Smooth Scouring-Rush. Phenology: May-Jul. Habitat: Moist areas. Distribution: QC and BC south to NY, w. PA, s. OH, s. IN, s. IL, AR (Peck 2011), e. TX, NM, AZ, CA, n. Mexico, and n. Central America. Reported for Warren County, w. VA (Sheik & Weeks 2023). There are old reports, repeated in RAB, and S, of this species farther south; documentation of these reports is not known and may be based on misapplication or misidentification.

Origin/Endemic status: Native

Synonymy ⓘ: = AqW, Ar, C, Can, ETx1, FNA2, G, GrPl, Il, K4, Mo1, NS, Pa, POWO, 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. Basionym: Equisetum laevigatum A.Braun 1844

Links to other floras: = Equisetum laevigatum - FNA2

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Wetland Indicator Status:

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

Heliophily ⓘ: 5

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image of plant© Paul Marcum source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Alan Cressler: Equisetum laevigatum, San Pedro River, San Pedro Riparian National Conservation Area, BLM Lands, Cochise County, Arizona 1 by Alan Cressler source | Original Image ⭷
image of plant© Paul Marcum source | Original Image ⭷

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Horticultural Information

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