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Callitriche aggregate
Species aggregate, Flowering plant, Freshwater
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Eriocaulon aquaticum – Pipewort
Species, Flowering plant, Freshwater
Pioban Uisge, Pibennog
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Glyceria notata – Plicate Sweet-grass
Species, Flowering plant, Freshwater
Melyswellt Plygedig, Perwellt Plygedig
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Mimulus aggregate
Species aggregate, Flowering plant, Freshwater
-
Poa annua – Annual Meadow-grass
Species, Flowering plant, Freshwater
Gwellt y Gweunydd, Gweunwellt Blynyddol, Gweunwellt Unflwydd
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Poa pratensis
Species aggregate, Flowering plant, Freshwater
-
Poa trivialis – Rough Meadow-grass
Species, Flowering plant, Freshwater
Gweunwellt Garw, Gweunwellt Lledarw
-
Spiraea aggregate
Species aggregate, Flowering plant, Freshwater
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