Equisetum pratense Ehrh.

  • Authority

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

  • Family


  • Scientific Name

    Equisetum pratense Ehrh.

  • Description

    Species Description - Stems annual, dimorphic, the sterile ones 2–5 dm, 1–3 mm thick, smoothish toward the base, otherwise beset with high, blunt, siliceous tubercles or very short, high, transverse ridge-crests on the (6–)10–18 ridges, with rather small vallecular cavities and a fairly large central cavity commonly 1/3–1/2 the diameter of the stem, the stomates in 2 broad bands in each furrow; sheaths 2–6 cm, green, the teeth 1–2 mm, persistent, only basally connate, with pale, hyaline margins and a firmer dark midstripe; branches regularly whorled at the middle and upper nodes, solid, mostly 3-angled, simple, the first internode to as long as the associated stem-sheath; fertile stems with simple branches, otherwise as in E. sylvaticum. Streambanks and moist woods; circumboreal, s. in our range to N.J. and ne. Io.

  • Common Names