Melothria pendula
Creeping Cucumber
Mentha aquatica
Water Mint
Mentha arvensis
Corn Mint
Mentha pulegium
Pennyroyal
Mentha x piperita
Peppermint
Mentha x villosa
Apple-mint
Menyanthes trifoliata
Bogbean
Mercurialis perennis
Dog's Mercury
Mespilus germanica
Medlar
Meum athamanticum
Spignel
Micranthes stellaris
Starry Saxifrage
Mikania micrantha
Bitter Vine
Minuartia recurva
Recurved Sandwort
Mitracarpus hirtus
Tropical Girdlepod
Moehringia trinervia
Three-nerved Sandwort
Moenchia erecta
Upright Chickweed
Molinia caerulea
Purple Moor-grass
Montia fontana
Blinks
Morus nigra
Black Mulberry
Muntingia calabura
Cotton Candy Berry
Murraya paniculata
Orange Jasmine
Musa acuminata
Cavendish Banana
Mycelis muralis
Wall Lettuce
Myosotis arvensis
Field Forget-me-not
Myosotis discolor
Changing Forget-me-not
Myosotis scorpioides
Water Forget-me-not
Myosotis secunda
Creeping Forget-me-not
Myosotis sylvatica
Wood Forget-me-not
Myrica gale
Bog-myrtle
Myriophyllum alterniflorum
Alternate Water-milfoil
Myriophyllum aquaticum
Parrot's-feather
Myriophyllum spicatum
Spiked Water-milfoil
Myrrhis odorata
Sweet Cicely
Narcissus macrolobus
Pale-flowered Daffodil
Narcissus obvallaris
Tenby Daffodil
Nasturtium officinale
Water-cress
Neottia cordata
Lesser Twayblade
Neottia nidus-avis
Bird's-nest Orchid
Neottia ovata
Common Twayblade
Nepenthes truncata
Nerium oleander
Oleander
Nicandra physalodes
Apple-of-Peru
Nonea lutea
Yellow Nonea
Nothofagus alpina
Rauli
Nuphar lutea
Yellow Water-lily
Nymphaea lotus
Egyptian lotus
Nymphoides peltata
Fringed Water-lily
Nypta fruticans
Nipa Palm
Ochna serrulata
Small-leaved Plane
Ocimum americanum
American Basil
Odontites vernus
Red Bartsia
Oenanthe aquatica
Fine-leaved Water-dropwort
Oenanthe crocata
Hemlock Water-dropwort
Oenanthe fistulosa
Tubular Water-dropwort
Oenanthe lachenalii
Parsley Water-dropwort
Oenanthe pimpinelloides
Corky-fruited Water-dropwort
Oenanthe silaifolia
Narrow-leaved Water-dropwort
Olearia macrodonta
New Zealand Holly
Onobrychis viciifolia
Sainfoin
Ononis reclinata
Small Restharrow
Ononis repens
Common Restharrow
Ononis spinosa
Spiny Restharrow
Ophioglossum azoricum
Small Adder's-tongue
Ophioglossum vulgatum
Adder's-tongue
Oplismenus compositus
Running Mountaingrass
Orchis mascula
Early-purple Orchid
Orchis militaris
Military Orchid
Orchis x angusticruris
Lady#Orchid#/ Monkey#Orchid#hybrid
Oreopteris limbosperma
Lemon-scented Fern
Ornithogalum pyrenaicum
Spiked Star-of-Bethlehem