Rumex altissimus Alph. Wood
  • Class-book Bot. (ed. 2)
  • Tall or pale dock

Cite taxon page as 'WFO (2021): Rumex altissimus Alph. Wood. Published on the Internet; Accessed on: 28 Sep 2021'

General Information

Plants perennial, glabrous, with vertical rootstock. Stems erect, rarely ascending, usually pro-ducing axillary shoots below 1st-order inflorescence or at proximal nodes, 50-90(-120) cm. Leaf blades ovate-lanceolate, elliptic-lanceolate, or lanceolate, 10-15 × 3-5.5 cm, usually ca. 2.5-4 times as long as wide, widest in proximal 2, thick, often subcoriaceous, base broadly cuneate, rarely almost rounded, margins entire, flat, apex acute or attenuate. Inflorescences terminal and axillary, terminal usually occupying distal 1/5- 3 of stem, rather dense, normally broadly paniculate. Pedicels articulated in proximal 1/ 3, sometimes almost near base, thick, (2-)3-7(-8) mm, usually approximately as long as inner tepals, occasionally slightly longer or shorter, articulation swollen. Flowers 12-20 in whorls; inner tepals with broadly triangular, ovate-triangular, or broadly ovate-deltoid, 4.5-6 × 3-4.5(-5) mm, base truncate or indistinctly cordate, margins entire, apex acute; tubercles (2-)3, equal or subequal, glabrous or minutely rugose. Achenes brown or dark reddish brown, 2.5-3.5 × 1.8-2.3 mm. 2n = 20.

  • Provided by: [A].Flora of North America @
    • Source: [
    • 1
    • ]. 

    "Stout perennial to 1 m, often branched; lvs all cauline, pale, flat, lanceolate or more often lance-ovate, acute or acuminate, obtuse or rarely rounded at base; infl loose, 1–3 dm, with usually few short ascending branches; pedicels 3–5 mm, jointed just above the base; valves firm, subrotund, 4–6 mm long and wide, broadly truncate at base; grains 1–3, when plural often unequal, the larger lanceolate, acute, half to two-thirds as long as the valve; 2n=20. Swamps and wet soil; N.H. to Mich., Minn., and Colo., s. to Va., Ga., Tex., and Ariz."

  • Provided by: [B].New York Botanical Garden
    • Source: [
    • 2
    • ]. 

    Other Local Names

    Tall or pale dock


     Information From

    Flora of North America @
    'Flora of North America @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • A Flora of North America Association
    New York Botanical Garden
    Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
    • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    World Flora Online Data. 2017.
    • C CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    World Flora Online Data. 2018.
    • D CC0 1.0 Universal (CC0 1.0).