Juncus arcticus Willd.

  • 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

    Juncus arcticus Willd.

  • Description

    Species Description - Stems arising in rows from long rhizomes, simple, 4–8 dm, finely and irregularly striate, without foliage lvs; basal sheaths to 12 or 15 cm, mucronate, bladeless; invol lf to 18 cm, a fifth to a third as long as the stem and appearing as a continuation of it; infl apparently lateral, capitate to diffuse, (1–)3–5(–12) cm; inner prophyll broadly round obovate; tep lanceolate, 3.3–4.7 mm, acuminate, with a conspicuous dark stripe on each side of the midrib; anthers 6, 2–4 times as long as the filaments; fr trilocular, acute, short-beaked, exceeding the perianth by 0.5–1 mm; 2n=40, 80, 84. Calcareous or brackish shores and dunes, and also inland; circumboreal, in our range s. to Pa. and Mo., especially abundant along the shores of the Great Lakes; S. Amer. (incl. J. balticus) Polymorphic; our plants may be referred to var. littoralis (Engelm.) B. Boivin.

  • Common Names