1. Family: Polygonaceae Juss.
    1. Genus: Rumex L.
      1. Rumex lanceolatus Thunb.

        This species is accepted, and its native range is Zimbabwe to S. Africa.

    [FZ]

    Flora Zambesiaca. Vol. 9, Part 3. Polygonaceae-Myriaceae. Pope GV, Polhill RM, Martins ES. 2006.

    Habit
    Erect perennial herbs up to 50 cm tall Erect perennial herbs up to 50 cm tall.
    Stem
    Stems hollow, glabrous, longitudinally striate, producing leafy axillary shoots which develop secondary inflorescences Stems hollow, glabrous, longitudinally striate, producing leafy axillary shoots which develop secondary inflorescences.
    Leaves
    Leaves green or greenish-brown; lamina 12–18 × 2–3 cm, narrowly oblong-lanceolate, subacute at the apex, attenuate at the base, entire or wavy on the margin, glabrous or with scattered papillae beneath; petiole 3–5 cm long Leaves green or greenish-brown; lamina 12–18 × 2–3 cm, narrowly oblong-lanceolate, subacute at the apex, attenuate at the base, entire or wavy on the margin, glabrous or with scattered papillae beneath; petiole 3–5 cm long.
    Ocrea
    Ocrea 1–2.5 cm long, striate, entire Ocrea 1–2.5 cm long, striate, entire.
    Flowers
    Flowers hermaphrodite, pedicellate, in many-flowered whorls arranged in congested terminal or axillary racemes, forming panicles; pedicels 2–3 mm long, unequal, articulated near or above the middle Flowers hermaphrodite, pedicellate, in many-flowered whorls arranged in congested terminal or axillary racemes, forming panicles; pedicels 2–3 mm long, unequal, articulated near or above the middle.
    Perianth
    Outer perianth segments greenish-brown, c. 2 mm long, oblong-lanceolate; inner perianth segments 3.5–4(4.5) × 2–3.5 mm, rhombic to triangular-lanceolate, acute or subacute to the apex, cuneate to rounded at the base, entire or subdenticulate on the margin, reticulate-veined, with a ± well developed dorsal tubercle near the base Outer perianth segments greenish-brown, c. 2 mm long, oblong-lanceolate; inner perianth segments 3.5–4(4.5) × 2–3.5 mm, rhombic to triangular-lanceolate, acute or subacute to the apex, cuneate to rounded at the base, entire or subdenticulate on the margin, reticulate-veined, with a ± well developed dorsal tubercle near the base.
    Stamens
    Stamens 6; filaments filiform Stamens 6; filaments filiform.
    Ovary
    Ovary 1–1.5 × 0.8–1 mm, trigonous Ovary 1–1.5 × 0.8–1 mm, trigonous.
    Fruits
    Nut pale brown, shiny, 1.8–2.5 × 0.5–1.5 mm, trigonous. Nut pale brown, shiny, 1.8–2.5 × 0.5–1.5 mm, trigonous.
    Ecology
    On river banks and dam margins, in wet places; 1280–1700 m.
    Distribution
    ZIM W, ZIM S Zimbabwe Also in Namibia, South Africa and Lesotho.

    Distribution

    Native to:

    Botswana, Cape Provinces, Free State, KwaZulu-Natal, Lesotho, Namibia, Northern Provinces, Swaziland, Zimbabwe

    Rumex lanceolatus Thunb. appears in other Kew resources:

    First published in Prodr. Pl. Cap.: 67 (1794)

    Accepted by

    • Pope, G.V., Polhill, R.M. & Martins, E.S. (eds.) (2006). Flora Zambesiaca 9(3): 1-277. Royal Botanic Gardens, Kew.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa an annotated checklist Strelitzia 14: 1-1231. National Botanical Institute, Pretoria.

    Literature

    Flora Zambesiaca
    • Prodr. Fl. SW. Afrika, fam. 23: 9 (1969). TAB. 10, fig. C.
    • Bot. Not. Suppl., vol. 3, 3: 63 (1954).
    • F.C. 5, 1: 480 (1912).
    • de Candolle, Prodr. 14: 50 (1856).
    • Campderá, Monogr. Rumex: 148 (1819).
    • Prodr. Pl. Cap., part 1: 67 (1794).
    Kew Backbone Distributions
    • Pope, G.V., Polhill, R.M. & Martins, E.S. (eds.) (2006). Flora Zambesiaca 9(3): 1-277. Royal Botanic Gardens, Kew.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa an annotated checklist Strelitzia 14: 1-1231. National Botanical Institute, Pretoria.

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0