Skip to main content
  1. Family: Polygonaceae Juss.
    1. Genus: Persicaria Mill.
      1. Persicaria limbata (Meisn.) H.Hara

        This species is accepted, and its native range is Africa, Indian Subcontinent.

    [FZ]

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

    Type
    Syntypes from Senegal and Nile Delta.
    Habit
    An erect or procumbent perennial herb, sometimes forming mats, appressed hairy on the upper parts, more rarely glabrous throughout or covered with long white hairs An erect or procumbent perennial herb, sometimes forming mats, appressed hairy on the upper parts, more rarely glabrous throughout or covered with long white hairs.
    Stem
    Stems reddish-brown, up to 2 m or more long, sometimes rooting at the lower nodes, longitudinally striate, hollow in the lower part Stems reddish-brown, up to 2 m or more long, sometimes rooting at the lower nodes, longitudinally striate, hollow in the lower part.
    Leaves
    Leaves 8–16 × 0.2–1.7(3.5) cm, linear-lanceolate, acute and apiculate at the apex, narrowed to the base, sometimes crisped on the margins, pubescent or with silky hairs on both surfaces, sometimes with some glands Leaves 8–16 × 0.2–1.7(3.5) cm, linear-lanceolate, acute and apiculate at the apex, narrowed to the base, sometimes crisped on the margins, pubescent or with silky hairs on both surfaces, sometimes with some glands.
    Ocrea
    Ocrea brownish, 1–1.8 cm long, glabrous, membranous, with a spreading or recurved herbaceous limb 1–9 mm long, ciliate at the apex and hairy outside Ocrea brownish, 1–1.8 cm long, glabrous, membranous, with a spreading or recurved herbaceous limb 1–9 mm long, ciliate at the apex and hairy outside.
    Flowers
    Flowers pedicellate, in fascicles of 2–3; fascicles numerous, surrounded by bracts and borne in 2–3 dense pedunculate, terminal or lateral, spiciform racemes 2–7 × 0.5 cm in size; peduncles up to 12 cm long, hairy; bracts hairy or glabrous, with or without a ciliate margin Flowers pedicellate, in fascicles of 2–3; fascicles numerous, surrounded by bracts and borne in 2–3 dense pedunculate, terminal or lateral, spiciform racemes 2–7 × 0.5 cm in size; peduncles up to 12 cm long, hairy; bracts hairy or glabrous, with or without a ciliate margin.
    Perianth
    Perianth white-pink, pink or bluish-pink, c. 4.5 mm long, 5-lobed; lobes 2.5–3 mm long Perianth white-pink, pink or bluish-pink, c. 4.5 mm long, 5-lobed; lobes 2.5–3 mm long.
    Stamens
    Stamens 7; filaments 2–2.5 mm long, filiform; anthers pink, 0.4 × 0.2 mm Stamens 7; filaments 2–2.5 mm long, filiform; anthers pink, 0.4 × 0.2 mm.
    Ovary
    Ovary 1.5 × 1.5 mm, compressed; styles 2, 1–2 mm long united for half their length
    Fruits
    Nut dark red-brown to black, shiny, smooth, 2.5–3 × 2.5–3 mm, ± lenticular, convex, the persistent style base forming a beak. Nut dark red-brown to black, shiny, smooth, 2.5–3 × 2.5–3 mm, ± lenticular, convex, the persistent style base forming a beak.
    Ecology
    Growing in moist places, often in water, on pan margins, river banks, open wet grassland, in sandy soils and alluvium, and dry water courses; up to 1500 m.
    Distribution
    Caprivi Strip In tropical Africa, from Egypt southwards to Dem. Rep. Congo and Tanzania and westwards to northern Nigeria, Senegal and Angola, south to Namibia and South Africa; also in India. Malawi Malawi Zimbabwe Zambia BOT N, BOT W, BOT SE, ZAM B, ZAM N, ZAM W, ZAM C, ZAM E, ZAM S, ZIM N, ZIM W, ZIM C, ZIM S, MAL C, MAL S, MOZ GI Botswana Mozambique
    Pistil
    Ovary 1.5 × 1.5 mm, compressed; styles 2, 1–2 mm long united for half their length.
    [FWTA]

    Polygonaceae, Hutchinson and Dalziel. Flora of West Tropical Africa 1:1. 1954

    Habit
    Perennial, 3–4 ft. long, more or less ascending
    Ecology
    In swamps and ditches.
    [FTEA]

    Polygonaceae, R. A. Graham. Flora of Tropical East Africa. 1958

    Habit
    An erect perennial herb.
    Stem
    Stems branched, green or red, basally decumbent and rooting at the nodes, usually with ascending, appressed hairs in the upper parts, or more rarely ± glabrous throughout or thickly covered with long white hairs.
    Ocrea
    Ocreae glabrous to hispid, membranous, brown, terminating in a spreading, green, foliaceous, undulating limb, 1–9 mm. broad, with a ciliate margin.
    Leaves
    Leaves sessile or subsessile, variable in shape but often narrow-lanceolate, sometimes dotted with glands, 8–11 (–15) × 0.8–1.8 (–3.5) cm., apically acute, narrowed to the base, sometimes crisped on the margins, usually pubescent, sometimes covered with silky hairs on both faces.
    Inflorescences
    Inflorescence a dense raceme, 2–6 cm. long, on long, pubescent peduncles arising in pairs from the uppermost ocreae (singly fide Meisn.).
    Bracts
    Bracts, at least the lower ones, usually pubescent with ciliate margins and a terminal fringe of cilia, but varying from glabrous and terminally non-ciliate to densely hirsute with long, silky hairs.
    Perianth
    Perianth pink 3.5–4.5 mm. Tepals 5, ovate-oblong, 2.5–3 mm. long.
    Style
    Styles 2, connate for approximately half their length.
    Fruits
    Nut ± rounded in outline, 2.5 × 2.5 mm., dark red-brown to black, shining, biconvex-lenticular.
    Figures
    Fig. 4/7, p. 23.
    Habitat
    Damp places, often growing in water; 1000–1500 m.
    Distribution
    T2 T7 T8 U3 from Egypt to Rhodesiaand west from northern Nigeria to Senegalalso in tropical Asia

    Images

    Distribution

    Native to:

    Angola, Bangladesh, Benin, Botswana, Burkina, Cameroon, Cape Provinces, Caprivi Strip, Chad, Congo, Egypt, Ethiopia, Free State, Guinea, India, Ivory Coast, Malawi, Mali, Mauritania, Mozambique, Namibia, Niger, Nigeria, Northern Provinces, Senegal, Sudan, Tanzania, Uganda, West Himalaya, Zambia, Zaïre, Zimbabwe

    Synonyms

    Common Names

    English
    Knot weed

    Other Data

    Persicaria limbata (Meisn.) H.Hara appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Davey, J.T. [409], Mali K000391982

    Bibliography

    First published in Fl. E. Himal.: 71 (1966)

    Accepted by

    • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
    • Dobignard, A. & Chatelain, C. (2013). Index synonymique de la flore d'Afrique du nord 5: 1-451. Éditions des conservatoire et jardin botaniques, Genève.
    • Mostaph, M.K. & Uddin, S.B. (2013). Dictionary of plant names of Bangladesh, Vasc. Pl.: 1-434. Janokalyan Prokashani, Chittagong, Bangladesh.
    • Sharma, M., Jerath, N. & Chadha, J. (2009). Material for the flora of Punjab state - XVI: a supplement Journal of Economic and Taxonomic Botany 33: 585-588.
    • Singh, M. & Ali, S.J. (2008). A study on aquatic Angiosperms of district Mau (East U.P.) Journal of East African Natural History 32: 877-890.
    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • 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.
    • Edwards, S., Tadesse, M., Demissew, S. & Hedberg, I. (eds.) (2000). Flora of Ethiopia and Eritrea 2(1): 1-532. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
    • Boulos, L. (1999). Flora of Egypt 1: 1-419. Al Hadara Publishing, Cairo.

    Literature

    Flora Zambesiaca

    • H. Hara, Fl. E. Himalaya: 71 (1966). TAB. 3, fig. A.

    Kew Backbone Distributions

    • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
    • Mostaph, M.K. & Uddin, S.B. (2013). Dictionary of plant names of Bangladesh, Vasc. Pl.: 1-434. Janokalyan Prokashani, Chittagong, Bangladesh.
    • Onana, J.M. (2011). The vascular plants of Cameroon a taxonomic checklist with IUCN assessments: 1-195. National herbarium of Cameroon, Yaoundé.
    • Lisowski, S. (2009). Flore (Angiospermes) de la République de Guinée Scripta Botanica Belgica 41: 1-517.
    • Singh, M. & Ali, S.J. (2008). A study on aquatic Angiosperms of district Mau (East U.P.) Journal of East African Natural History 32: 877-890.
    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Pope, G.V., Polhill, R.M. & Martins, E.S. (eds.) (2006). Flora Zambesiaca 9(3): 1-277. Royal Botanic Gardens, Kew.
    • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.
    • Sita, P. & Moutsambote, J.-M. (2005). Catalogue des plantes vasculaires du Congo, ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa an annotated checklist Strelitzia 14: 1-1231. National Botanical Institute, Pretoria.
    • Aké Assi, L. (2002). Flore de la Côte-d'Ivoire: catalogue systématique, biogéographie et écologie. II Boissiera 58: 1-401.
    • Boulos, L. (1999). Flora of Egypt 1: 1-419. Al Hadara Publishing, Cairo.
    • Barry, J. P. & Celles, J.S. (1991). Flore de Mauritanie 1: 1-359. Centre Regional de Documentation Pedagogique, Nice.
    • Lebrun, J.p., Toutain, B., Gaston, A. & Boudet, G. (1991). Catalogue des Plantes Vasculaires du Burkina Faso: 1-341. Institut d' Elevage et de Médecine Vétérinaire des Pays Tropicaux, Maisons Alfort.
    • Boudet, G., Lebrun, J.P. & Demange, R. (1986). Catalogue des plantes vasculaires du Mali: 1-465. Etudes d'Elevage et de Médecine Vétérinaire des Pays Tropicaux.
    • Peyre de Fabregues, B. & Lebrun, J.-P. (1976). Catalogue des Plantes Vascularies du Niger: 1-433. Institut d' Elevage et de Médecine Vétérinaire des Pays Tropicaux, Maisons Alfort.
    • Lebrun, J.-P., Audru, J., Gaston, A. & Mosnier, M. (1972). Catalogue des Plantes Vasculaires du Tchad Méridional: 1-289. Institut d' Elevage et de Médecine Vétérinaire des Pays Tropicaux, Maisons Alfort.
    • Graham, R.A. (1958). Flora of Tropical East Africa, Polygonaceae: 1-40.
    • Hutchinson, J., Dalziel, J.M. & Keay, R.W.J. (1954-1958). Flora of West Tropical Africa, ed. 2, 1: 1-828.
    • Robyns, W. & al. (eds.) (1948-1963). Flore du Congo Belge et du Ruanda-Urundi 1-10.

    Sources

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

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Flora of West Tropical Africa
    Flora of West Tropical Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. 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 2020. 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

    Plants and People Africa
    Common Names from Plants and People Africa http://www.plantsandpeopleafrica.com/
    © Plants and People Africa http://www.plantsandpeopleafrica.com http://creativecommons.org/licenses/by/3.0/