Eryngium planum L.

  • 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

    Eryngium planum L.

  • Description

    Species Description - Perennial to 1 m from a thickened, woody taproot; lvs net-veined, the basal and lower cauline with elliptic-oblong to elliptic-ovate, crenate to spinulose-serrate blade 4–10 cm rounded or cordate at base to the long petiole, the others progressively less petiolate (or sessile), more sharply toothed or cleft, and often broader; heads bluish, ± ovoid, 1.5–2 cm, subtended by spreading, narrow, spinulose-toothed to entire bracts 1.5–3 cm; bractlets firm, 5–6 mm, the lower tricuspidate; 2n=16. Native of Europe, sparingly intr. in fields and waste places, as in N.Y. June, July.

  • Discussion

    Two other taprooted European spp. are also rarely intr. with us. E. maritimum L. has very firm, broad, palmately veined (and often lobed), very strongly spiny-margined lvs. E. campestre L., also very spiny, has more pinnate and more dissected lvs, the principal ones with a broad, green, spiny-toothed midstrip