| NAME OF PLANT | WHERE FOUND | DATE | WHERE FOUND | DATE |
| Oxalis corniculata | ||||
| procumbent yellow-sorrel | ||||
| Oxalis debilis | ||||
| large-flowered pink-sorrel | ||||
| Oxyria digyna | ||||
| mountain sorrel | ||||
| Papaver argemone | ||||
| prickly poppy | ||||
| Papaver dubium | ||||
| long-headed poppy | ||||
| Papaver rhoeas | ||||
| common poppy | ||||
| Papaver somniferum | ||||
| opium poppy | ||||
| Parapholis strigosa | ||||
| hard-grass | ||||
| Paretaria judaica | ||||
| pellitory-of-the-wall | ||||
| Paris quadrifolia | ||||
| herb Paris | ||||
| Parnassia palustris | ||||
| grass-of-parnassus | ||||
| Pastinaca sativa | ||||
| wild parsnip | ||||
| Pedicularis palustris | ||||
| marsh lousewort | ||||
| Pedicularis sylvatica | ||||
| lousewort | ||||
| Pentaglottis sempervirens | ||||
| green alkanet | ||||
| Persicaria amphibia | ||||
| amphibious bistort | ||||
| Persicaria bistorta | ||||
| common bistort | ||||
| Persicaria hydropiper | ||||
| water-pepper | ||||
| Persicaria lapathifolia | ||||
| pale persicaria | ||||
| Persicaria maculosa | ||||
| redshank | ||||
| 63 | ||||