Pernettya mucronata – synonym of Gaultheria mucronata
Platanthera bifolia subsp. chlorantha – synonym of Platanthera chlorantha
Platanthera bifolia subsp. latiflora – synonym of Platanthera bifolia
Platanthera chlorantha var. gselliana – synonym of Platanthera chlorantha
Platanthera montana – synonym of Platanthera chlorantha
Platanthera solsticialis – synonym of Platanthera bifolia
Platanthera solsticialis var. latiflora – synonym of Platanthera bifolia
Polygonum amphibium – synonym of Persicaria amphibia
Polygonum campanulatum – synonym of Persicaria campanulata
Polygonum hydropiper – synonym of Persicaria hydropiper
Polygonum minus – synonym of Persicaria minor
Polygonum persicaria – synonym of Persicaria maculosa
Polygonum polystachyum – synonym of Persicaria wallichii
Potamogeton panormitanus – synonym of Potamogeton pusillus
Potamogeton pusillus – synonym of Potamogeton berchtoldii
Pseudorchis albida subsp. tricuspis – synonym of Pseudorchis albida