 Nigella damascena Persian jewel Juffertje in 't groen |
 Nymphoides Peltata Yellow floating heart Watergentiaan |
 Odontites vernus subsp. vernus Red bartsia Rode ogentroost |
 Odontites vernus subsp. vernus Red bartsia Rode ogentroost |
 Oenanthe fistulosa Tubular water-dropwort Pijptorkruid |
 Oenothera biennis Evening primrose Middelste teunisbloem |
 Oenothera biennis Evening primrose Middelste teunisbloem |
 Oenothera parviflora Small-flowered evening-primrose Kleine teunisbloem |
 Ononis repens subsp. repens Common restharrow Kruipend stalkruid |
 Orchis anthropophora (formerly Aceras anthropophorum) Man orchid Poppenorchis |
 Orchis militaris Military orchid Soldaatje |
 Orchis militaris Soldaatje |
 Orchis militaris Soldaatje |
 Orchis purpurea Hudson Purperorchis |
 Orchis purpurea Hudson Purperorchis |
 Orchis purpurea Hudson Purperorchis |
 Orchis purpurea Hudson Purperorchis |
 Orchis simia Lam Monkey orchid Aapjesorchis |
 Orchis simia Lam Monkey orchid Aapjesorchis |
 Orchis x hybrida boenningh (orchis militaris x orchis purpurea) |
 Origanum vulgare Wilde marjolein |
 Ornithogalum Nutans Drooping star-of-Bethlehem Geknikte vogelmelk |
 Ornithogalum umbellatum Star-of-Bethlehem Gewone vogelmelk |
 Ornithogalum umbellatum Star-of-Bethlehem Gewone vogelmelk |
 Papaver dubium Long-headed poppy Kleine klaproos |
 Papaver dubium Long-headed poppy Kleine klaproos |
 Papaver dubium Long-headed poppy Kleine klaproos |
 Papaver orientale Oriental poppy Oosterse klaproos |
 Papaver rhoeas Shirley poppy Grote klaproos |
 Parentucellia viscosa Yellow glandweed Kleverige ogentroost |
 Paris quadrifolia Herb Paris Eenbes |
 Pentaglottis sempervirens Green alkanet Overblijvende ossentong |