Malva sylvestris
Common Mallow
Matourea azurea
Amazon Blue
Matricaria chamomilla
Scented Mayweed
Medicago arabica
Spotted Medick
Medicago lupulina
Black Medick
Melampyrum pratense
Common Cow-wheat
Melampyrum sylvaticum
Small Cow-wheat
Melastoma malabathricum
Malabar Melastome
Melica uniflora
Wood Melick
Melilotus albus
White Melilot
Melilotus indicus
Small Melilot
Melilotus officinalis
Ribbed Melilot
Meloe violcaeus
Violet Oil Beetle
Melolontha melolontha
Cockchafer
Mentha aquatica
Water Mint
Mentha arvensis
Corn Mint
Mentha pulegium
Pennyroyal
Menyanthes trifoliata
Bogbean
Mercurialis perennis
Dog's Mercury
Micranthes stellaris
Starry Saxifrage
Mimosa pudica
Sensitive Plant
Minuartia recurva
Recurved Sandwort
Misopates orontium
Weasel's-snout
Mitracarpus hirtus
Tropical Girdlepod
Moehringia trinervia
Three-nerved Sandwort
Montia fontana
Blinks
Mussaenda erythrophylla
Ashanti Blood
Myosotis discolor
Changing Forget-me-not
Myosotis laxa
Tufted Forget-me-not
Myosotis ramosissima
Early Forget-me-not
Myosotis scorpioides
Water Forget-me-not
Myosotis secunda
Creeping Forget-me-not
Myosurus minimus
Mousetail
Myriophyllum spicatum
Spiked Water-milfoil
Myrrhis odorata
Sweet Cicely
Narcissus obvallaris
Tenby Daffodil
Narcissus pseudonarcissus
Daffodil
Nardus stricta
Mat-grass
Narthecium ossifragum
Bog Asphodel
Neottia cordata
Lesser Twayblade
Neottia nidus-avis
Bird's-nest Orchid
Nephrolepis brownii
Asian Sword-fern
Nerine bowdenii
Cape Flower
Nerium oleander
Oleander
Neustanthus phaseoloides
Tropical Kudzu
Nicandra physalodes
Apple-of-Peru
Noccaea caerulescens
Alpine Penny-cress
Nuphar lutea
Yellow Water-lily
Nymphaea lotus
Egyptian lotus
Nymphoides peltata
Fringed Water-lily
Ochrolechia parella
Crab-eye Lichen
Odontites vernus
Red Bartsia
Odontosoria chinensis
Lace Fern
Oenanthe crocata
Hemlock Water-dropwort
Oenanthe fistulosa
Tubular Water-dropwort
Oenanthe lachenalii
Parsley Water-dropwort
Oenanthe pimpinelloides
Corky-fruited Water-dropwort
Oenothera glazioviana
Large-flowered Evening-primrose
Olearia macrodonta
New Zealand Holly
Onobrychis viciifolia
Sainfoin
Ononis reclinata
Small Restharrow
Ononis repens
Common Restharrow
Ophioglossum azoricum
Small Adder's-tongue
Ophioglossum vulgatum
Adder's-tongue
Ophioparma ventosa
Blood-spot Lichen
Ophrys apifera
Bee Orchid
Ophrys insectifera
Fly Orchid
Ophrys sphegodes
Early Spider-orchid
Orchis mascula
Early-purple Orchid
Orchis militaris
Military Orchid