| Rumex acetosella | GB, VC46 Cardiganshire, Grogwynion | Andrew David Quentin Agnew | | 11/6/1999 | ABS |
| Rumex acetosa | GB, VC46 Cardiganshire, Penderi Cliffs | Andrew David Quentin Agnew | | 25/5/1999 | ABS |
| Rosa pimpinellifolia | GB, VC46 Cardiganshire, Llanrhystud | Andrew David Quentin Agnew | | 25/5/1999 | ABS |
| Rhynchospora fusca | GB, VC46 Cardiganshire, Borth Bog | Andrew David Quentin Agnew | | 8/1978 | ABS |
| Rhinanthus minor subsp. borealis | GB, VC46 Cardiganshire, Rhos glandenys | Andrew David Quentin Agnew | | 11/6/1999 | ABS |
| Reseda luteola | GB, VC46 Cardiganshire, Aberystwyth | Andrew David Quentin Agnew | | 8/1975 | ABS |
| Ranunculus sceleratus | GB, VC46 Cardiganshire, Ynyslas | Andrew David Quentin Agnew | | 13/7/1975 | ABS |
| Ranunculus omiophyllus | GB, VC46 Cardiganshire, Llyn Eiddwen | Andrew David Quentin Agnew | | 2/5/1998 | ABS |
| Ranunculus omiophyllus | GB, VC46 Cardiganshire, Rhos Glyn yr Helyg | Andrew David Quentin Agnew | | 22/5/1999 | ABS |
| Ranunculus flammula | GB, VC46 Cardiganshire, Llyn Eiddwen Reserve | Andrew David Quentin Agnew Shirley Agnew | | 2/8/1996 | ABS |
| Ranunculus ficaria | GB, VC46 Cardiganshire, Penderi Cliffs | Andrew David Quentin Agnew | | 3/4/1997 | ABS |
| Ranunculus acris | GB, VC46 Cardiganshire, Pant y Gwair | Andrew David Quentin Agnew Shirley Agnew | | 2/8/1996 | ABS |
| Ranunculus acris | GB, VC46 Cardiganshire, Rhos glandenys | Andrew David Quentin Agnew | | 11/6/1999 | ABS |
| Pulicaria dysenterica | GB, VC46 Cardiganshire, Ynyslas | Andrew David Quentin Agnew | | 4/9/1975 | ABS |
| Prunus spinosa | GB, VC46 Cardiganshire, Penderi Cliffs | Andrew David Quentin Agnew | | 3/4/1997 | ABS |
| Prunella vulgaris | GB, VC46 Cardiganshire, Llyn Eiddwen Reserve | Andrew David Quentin Agnew Shirley Agnew | | 2/8/1996 | ABS |
| Primula vulgaris | GB, VC46 Cardiganshire, Penderi Cliffs | Andrew David Quentin Agnew | | 3/4/1997 | ABS |
| Potentilla sterilis | GB, VC46 Cardiganshire, allt ty cam | Andrew David Quentin Agnew | | 20/4/1997 | ABS |
| Potentilla erecta | GB, VC46 Cardiganshire, Llyn Eiddwen Reserve | Andrew David Quentin Agnew Shirley Agnew | | 2/8/1996 | ABS |
| Potentilla erecta | GB, VC46 Cardiganshire, Llyn Eiddwen Reserve | Andrew David Quentin Agnew Shirley Agnew | | 2/8/1996 | ABS |
| Potentilla erecta | GB, VC46 Cardiganshire, Penderi Cliffs | Andrew David Quentin Agnew | | 25/5/1999 | ABS |
| Potentilla erecta | GB, VC46 Cardiganshire, Rhos Pil Bach | Andrew David Quentin Agnew | | 29/5/1999 | ABS |
| Poa pratensis | GB, VC46 Cardiganshire, Capel Bangor | Andrew David Quentin Agnew Shirley Agnew | | 26/7/1996 | ABS |
| Poa palustris | GB, VC46 Cardiganshire, Rhos Fullbrook | Andrew David Quentin Agnew | | 11/6/1999 | ABS |
| Poa annua | GB, VC46 Cardiganshire, Cardigan Island | Andrew David Quentin Agnew | | 3/7/1999 | ABS |
| Plantago coronopus | GB, VC46 Cardiganshire, Penderi Cliffs | Andrew David Quentin Agnew | | 25/5/1999 | ABS |
| Phragmites australis | GB, VC46 Cardiganshire, Cors Fochno | Andrew David Quentin Agnew | | 7/11/2001 | ABS |
| Phragmites australis | GB, VC46 Cardiganshire, Cors Fochno | Andrew David Quentin Agnew | | 7/11/2001 | ABS |
| Persicaria wallichii | GB, VC49 Caernarvonshire, Bangor | Andrew David Quentin Agnew | | 11/9/1998 | ABS |
| Pedicularis sylvatica | GB, VC46 Cardiganshire, Rhos Glyn yr Helyg | Andrew David Quentin Agnew | | 22/5/1999 | ABS |
| Pastinaca sativa | GB, VC9 Dorset, Abbotsbury | Andrew David Quentin Agnew | | 8/8/1975 | ABS |
| Oxalis acetosella | GB, VC46 Cardiganshire, Goginan | Andrew David Quentin Agnew Shirley Agnew | | 31/3/1997 | ABS |
| Orobanche elatior | GB, VC46 Cardiganshire, Borth | Andrew David Quentin Agnew | | 10/6/1983 | ABS |
| Oenothera cambrica | GB, VC46 Cardiganshire, Aberystwyth | Andrew David Quentin Agnew | | 7/8/1975 | ABS |
| Oenothera cambrica | GB, VC46 Cardiganshire, Aberystwyth | Andrew David Quentin Agnew | | 7/8/1975 | ABS |
| Oenanthe crocata | GB, VC46 Cardiganshire, Aberstrincell Lime Kilns | Andrew David Quentin Agnew | | 18/6/1999 | ABS |
| Odontites vernus | GB, VC46 Cardiganshire, Borth | Andrew David Quentin Agnew | | 29/7/1975 | ABS |
| Narthecium ossifragum | GB, VC46 Cardiganshire, Cors Y Sychnant | Andrew David Quentin Agnew | | 6/7/1999 | ABS |
| Narthecium ossifragum | GB, VC46 Cardiganshire, Llyn Eiddwen Reserve | Andrew David Quentin Agnew Shirley Agnew | | 2/8/1996 | ABS |
| Nardus stricta | GB, VC46 Cardiganshire, Llyn Eiddwen Reserve | Andrew David Quentin Agnew Shirley Agnew | | 24/6/1996 | ABS |