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  1. Persicaria maculosa x lapathifolia = P. x pseudolapathum (Schur) D.H. Kent

    Species hybrid, Flowering plant, Freshwater

  2. Persicaria maculosa x minor = P. x brauniana (F.W. Schultz) Soják

    Species hybrid, Flowering plant, Freshwater

  3. Persicaria maculosa x mitis = P. x condensata (F.W. Schultz) Soják

    Species hybrid, Flowering plant, Freshwater

  4. Persicaria minor (Huds.) Opiz – Small Water-pepper

    Species, Flowering plant, Freshwater

    Y Dinboeth Fach, Clymog Bychan, Treigledlys

  5. Persicaria mitis (Schrank) Assenov – Tasteless Water-pepper

    Species, Flowering plant, Freshwater

    Lax-Flowered Persicaria, Y Dinboeth Ddi-Flas, Penboeth Diflas

  6. Persicaria mitis x minor = P. x wilmsii (Beck) Soják

    Species hybrid, Flowering plant, Freshwater

  7. Persicaria mollis (D. Don) H. Gross – Soft Knotweed non-native

    Species, Flowering plant, Terrestrial

    Y Ganwraidd Wlanog

  8. Persicaria nepalensis (Meisn.) H. Gross – Nepal Persicaria non-native

    Species, Flowering plant, Terrestrial

    Canwraidd Nepal

  9. Persicaria orientale (L.) Vilm.

    Species, Flowering plant

  10. Persicaria pensylvanica (L.) M. Gómez – Pinkweed non-native

    Species, Flowering plant, Terrestrial

    Y Ganwraidd Rosliw, Pinclys

  11. Persicaria perfoliata (L.) H. Gross – Mile-a-minute Weed non-native

    Species, Flowering plant, Terrestrial

    Asiatic Tearthumb

    Species list: EU Invasive Alien Species Regulation

    Species list: NRW Sustainable Management of Natural Resources (SMNR)

    Species list: Contingency plan species for Wales

    Species list: INNS of Interest to Wales June 2022

    Species list: Non-native species of interest to Northern Ireland

    Species list: INNS Alert list for Northern Ireland

    Species list: Invasive Species Ireland

  12. Persicaria sagittata (L.) H. Gross ex Nakai – American Tear-thumb non-native

    Species, Flowering plant, Terrestrial

    Canwraidd America, Costog Bigog

  13. Persicaria senegalensis (L.) H. Gross ex Nakai

    Species, Flowering plant

  14. Persicaria vacciniifolia

    Species, Flowering plant

  15. Persicaria vivipara (L.) Ronse Decr. – Alpine Bistort

    Species, Flowering plant, Freshwater

    Viviparous Bistort, Canwraidd y Mynydd, Neidrlys Mynyddig, Llys y Neidr Fynyddig

  16. Persicaria wallichii Greuter & Burdet – Himalayan Knotweed non-native

    Species, Flowering plant, Freshwater, terrestrial

    Y Ganwraidd Himalaiaidd, Clymog yr Himalaya

    Species list: INNS of Interest to Wales June 2022

    Species list: WFD UKTAG aquatic alien species impact

    Species list: Non-native species of interest to Northern Ireland

    Species list: WFD UKTAG 2015 Aquatic Alien Species for Ireland

    Species list: INNS Alert list for Northern Ireland

  17. Persicaria weyrichii (F. Schmidt) Ronse Decr. – Chinese Knotweed non-native

    Species, Flowering plant, Terrestrial

    Canwraidd Tsieina