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 rest-harrow        
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        
Ornithogalum 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        
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