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Fallopia dumetorum – Copse-bindweed
Species, Flowering plant, Freshwater
Clymog y Berth
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Oxyria digyna – Mountain Sorrel
Species, Flowering plant, Freshwater
Suran y Mynydd, Suran â Dalen Arennaidd
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Persicaria amphibia – Amphibious Bistort
Species, Flowering plant, Freshwater
Canwraidd y Dŵr, Canwraidd Bengoch, Canwraidd Goch, Beidiog Goch, Beidiog Rudd, Pengoch
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Persicaria bistorta – Common Bistort
Species, Flowering plant, Freshwater
Bistort, Snakeweed, Llysiau'r Neidr, Pigwrn y Pinwydd, Llys y Neidr, Blodau Powdr, Neidrlys
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Persicaria hydropiper – Water-pepper
Species, Flowering plant, Freshwater
Y Dinboeth, Penboeth, Tinboeth, Llys y Din, Llysiau'r Din, Pupur y Dwfr
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Persicaria lapathifolia – Pale Persicaria
Species, Flowering plant, Freshwater
Canwraidd y Dom, Llys y Dom, Costog y Domen, Costog y Dom, Gwlydd y Dom, Tafod yr Iâr, Llysiau'r Dom, Llysiau'r Domen
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Persicaria maculosa – Redshank
Species, Flowering plant, Freshwater
Redleg, Persicaria, Y Ganwraidd Goesgoch, Coesgoch, Dail y Groes, Elinog Goch
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Persicaria minor – Small Water-pepper
Species, Flowering plant, Freshwater
Y Dinboeth Fach, Clymog Bychan, Treigledlys
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Persicaria mitis – Tasteless Water-pepper
Species, Flowering plant, Freshwater
Lax-Flowered Persicaria, Y Dinboeth Ddi-Flas, Penboeth Diflas
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Persicaria vivipara – Alpine Bistort
Species, Flowering plant, Freshwater
Viviparous Bistort, Canwraidd y Mynydd, Neidrlys Mynyddig, Llys y Neidr Fynyddig
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Polygonum aviculare – Knotgrass
Species, Flowering plant, Freshwater
Knotgrass agg., Clymog, Y Canclwm, Berw'r Ieir, Berwr yr Iâr, Canclwm, Berw'r Iâ, Gwaedlys, Llysiau y Milwr, Clymlys, Treigledlys
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Rumex acetosa – Common Sorrel
Species, Flowering plant, Freshwater, terrestrial
Suran y Maes, Suran y Cŵn, Main Suran, Suran y Frân, Suran y Waun
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Rumex aquaticus – Scottish Dock
Species, Flowering plant, Freshwater
Copag Albannach, Tafolen yr Alban, Tafolen y Dŵr
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Rumex conglomeratus – Clustered Dock
Species, Flowering plant, Freshwater
Tafol Mair, Tafol Blaen, Tafolen Fair, Chwysoglen, Tafol Llym, Turth, Tafolen, Tafolen Mair, Trython
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Rumex crispus – Curled Dock
Species, Flowering plant, Freshwater
Tafol Crych, Tafolen Grech, Tafol Crychion, Tafolen Grych
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Rumex hydrolapathum – Water Dock
Species, Flowering plant, Freshwater
Great Water Dock, Suran Hirian, Tafol y Dŵr, Tafolen y Dŵr, Gwaedllys, Suran Hir, Tafol Hir, Tafolen Hir
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Rumex longifolius – Northern Dock
Species, Flowering plant, Freshwater
Butter Dock, Tafolen Hir, Tafolen y Gogledd, Tafol y Gogledd, Suran Hir
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Rumex maritimus – Golden Dock
Species, Flowering plant, Freshwater
Tafol Arfor, Tafolen Felen, Tafol Melynion, Tafolen y Gors, Tafolen y Môr
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Rumex obtusifolius – Broad-leaved Dock
Species, Flowering plant, Freshwater
Tafolen Gyffredin, Dail Tafol, Tafol, Tafol y Cŵn, Tafolen Lydanddail, Tafolen y Cŵn
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Rumex palustris – Marsh Dock
Species, Flowering plant, Freshwater
Tafol y Llaid, Tafolen y Gors, Tafol y Gors