Equisetum scirpoides Michx.

• Authority

  Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

• Family

  Equisetaceae

• Scientific Name

  Equisetum scirpoides Michx.

• Description

  Species Description - Stems all alike, evergreen, prostrate or ascending, often bent or contorted, 0.7–2.5 dm, 0.5–1 mm thick, unbranched or with a few long branches, with 3 primary ridges, the ridges tuberculate, broadly and deeply concave, so that the stem appears 6-ridged; central cavity none, vallecular cavities 3, large; stomates in 2 rows in each principal furrow; sheaths 3–4 mm, flaring, with a broad black band above a usually green base, the 3 scarious-margined teeth each with a subulate, often deciduous tip; cones small, 3–5 mm, subsessile, apiculate. Moist, often swampy places, especially in coniferous woods; circumboreal, in Amer. s. to Conn., N.Y., s. Ill., Io., S.D., and Wash.

• Common Names

  dwarf scouring rush