NAME OF PLANT WHERE FOUND DATE WHERE FOUND DATE
  • Oenothera biennis
  • common evening-primrose
       
  • Oenothera glazioviana
  • large-flowered evening-primrose
       
  • Onobrychis viciifolia
  • sainfoin
       
  • Ononis repens
  • common restharrow
       
  • Ononis spinosa
  • spiny restharrow
       
  • Onopordum acanthium
  • cotton thistle
       
  • Ophioglossum vulgatum
  • adder's-tongue
       
  • Ophrys apifera
  • bee orchid
       
  • Ophrys insectifera
  • fly orchid
       
  • Orchis mascula
  • early purple orchid
       
  • Orchis morio
  • green-winged orchid
       
  • Oreopteris limbosperma
  • lemon-scented fern
       
  • Origanum vulgare
  • wild marjoram
       
  • Ornithogallum angustifolium
  • star-of-Bethlehem
       
  • Ornithopus perpusillus
  • bird's-foot
       
  • Orobanche elatior
  • knapweed broomrape
       
  • Orobanche hederae
  • ivy broomrape
       
  • Orobanche minor
  • common broomrape
       
  • Osmunda regalis
  • royal fern
       
  • Oxalis acetosella
  • wood-sorrel