Rumex verticillatus L.

• Authority

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

• Family

  Polygonaceae

• Scientific Name

  Rumex verticillatus L.

• Description

  Species Description - Stout, taprooted, glabrous perennial to 1.5 m, with many short axillary branches; lvs flat, lanceolate or lance-linear, narrowed to the base; infl 2–4 dm, with usually few ascending leafless branches, the verticils becoming contiguous in the upper half, pedicels straight, slender, 10–15 mm, deflexed, jointed near the base; valves broadly triangular-ovate, 3.5–6 mm, nearly or fully as wide, or even a little wider than long, obtuse, truncate at base, very thick toward the center; grains 3, lanceolate, two-thirds as long as the valve, the blunt base projecting 0.5 mm below the valve; 2n=60. Swamps and wet lowland woods; Que. and Ont. to Wis. and Kans., s. to Fla. and Tex. (R. floridanus)

• Common Names

  water-dock, swamp dock