Marrubium vulgare
White Horehound
Matricaria chamomilla
Scented Mayweed
Matricaria discoidea
Pineappleweed
Matthiola sinuata
Sea Stock
Medicago arabica
Spotted Medick
Medicago littoralis
Shore Medick
Medicago lupulina
Black Medick
Medicago polymorpha
Toothed Medick
Medicago sativa
Lucerne
Melampyrum arvense
Field Cow-wheat
Melampyrum pratense
Common Cow-wheat
Melampyrum sylvaticum
Small Cow-wheat
Melanoleuca sp.
Melica nutans
Mountain Melick
Melica uniflora
Wood Melick
Melilotus albus
White Melilot
Melilotus altissimus
Tall Melilot
Melilotus indicus
Small Melilot
Melilotus officinalis
Ribbed Melilot
Melittis melissophyllum
Bastard Balm
Mentha aquatica
Water Mint
Mentha arvensis
Corn Mint
Mentha pulegium
Pennyroyal
Mentha x piperita
Peppermint
Menyanthes trifoliata
Bogbean
Mercurialis annua
Annual Mercury
Mercurialis perennis
Dog's Mercury
Meum athamanticum
Spignel
Mibora minima
Early Sand-grass
Micranthes stellaris
Starry Saxifrage
Minuartia recurva
Recurved Sandwort
Misopates calycinum
Pale Weasel's-snout
Misopates orontium
Weasel's-snout
Moehringia trinervia
Three-nerved Sandwort
Moenchia erecta
Upright Chickweed
Molinia caerulea
Purple Moor-grass
Montia fontana
Blinks
Muscari neglectum
Grape-hyacinth
Mycelis muralis
Wall Lettuce
Mycena sp. (2)
Myosotis alpestris
Alpine Forget-me-not
Myosotis arvensis
Field Forget-me-not
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
Myosotis sylvatica
Wood Forget-me-not
Myosurus minimus
Mousetail
Myrica gale
Bog-myrtle
Myriophyllum alterniflorum
Alternate Water-milfoil
Myriophyllum aquaticum
Parrot's-feather
Myriophyllum spicatum
Spiked Water-milfoil
Myrrhis odorata
Sweet Cicely
Narcissus hispanicus
Spanish Daffodil
Narcissus macrolobus
Pale-flowered Daffodil
Narcissus minor
Lesser Daffodil
Narcissus nobilis
Large-flowered Daffodil
Narcissus obvallaris
Tenby Daffodil
Narcissus pseudonarcissus
Daffodil
Narcissus x cyclazetta
Head-to-head Daffodil
Nardus stricta
Mat-grass
Narthecium ossifragum
Bog Asphodel
Nasturtium officinale
Water-cress
Neottia cordata
Lesser Twayblade
Neottia nidus-avis
Bird's-nest Orchid
Neottia ovata
Common Twayblade
Neuroterus quercusbaccarum
Common Spangle Gall
Nicandra physalodes
Apple-of-Peru
Noccaea caerulescens
Alpine Penny-cress