L-album wainscot
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 311
Labidocera wollastoni
- Group
- Crustaceans
- Peak month
- September
- Records since 2000
- 105
Labidoplax buskii
- Group
- Starfish and sea urchins
- Peak month
- March
- Records since 2000
- 879
Labilithrix luteola
- Group
- Microorganisms and protists
- Peak month
- January
- Records since 2000
- 126
Labulla thoracica
- Group
- Spiders
- Peak month
- September
- Records since 2000
- 156
Laburnum
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 1,393
Labyrinth Spider
- Group
- Spiders
- Peak month
- July
- Records since 2000
- 784
Lacanobia contigua
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 78
Lacanobia suasa
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 81
Laccaria bicolor
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 119
Laccaria fraterna
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 76
Laccaria proxima
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 405
Laccaria tortilis
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 96
Laccobius bipunctatus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 2,255
Laccobius colon
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 304
Laccobius minutus
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 669
Laccobius sinuatus
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 319
Laccobius striatulus
- Group
- Beetles
- Peak month
- September
- Records since 2000
- 327
Laccophilus hyalinus
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 573
Laccophilus minutus
- Group
- Beetles
- Peak month
- October
- Records since 2000
- 1,629
Laccornis oblongus
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 128
Lachesilla pedicularia
- Group
- Other insects
- Peak month
- September
- Records since 2000
- 97
Lachnella alboviolascens
- Group
- Fungi
- Peak month
- April
- Records since 2000
- 212
Lachnella villosa
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 163
Lachnellula occidentalis
- Group
- Fungi
- Peak month
- February
- Records since 2000
- 89
Lachnellula subtilissima
- Group
- Fungi
- Peak month
- January
- Records since 2000
- 59
Lachnum apalum
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 252
Lachnum brevipilosum
- Group
- Fungi
- Peak month
- April
- Records since 2000
- 109
Lachnum carneolum
- Group
- Fungi
- Peak month
- June
- Records since 2000
- 51
Lachnum controversum
- Group
- Fungi
- Peak month
- July
- Records since 2000
- 72
Lachnum mollissimum
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 105
Lachnum sulphureum
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 133
Lachnus roboris
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 77
Lacinius ephippiatus
- Group
- Mites, harvestmen and other arachnids
- Peak month
- June
- Records since 2000
- 161
Lackey
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 980
Lactarius acerrimus
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 70
Lactarius aspideus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 51
Lactarius aurantiacus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 243
Lactarius azonites
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 73
Lactarius camphoratus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 291
Lactarius chrysorrheus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 188
Lactarius circellatus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 75
Lactarius controversus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 143
Lactarius deterrimus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 440
Lactarius evosmus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 63
Lactarius fluens
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 189
Lactarius fuliginosus
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 118
Lactarius fulvissimus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 316
Lactarius hepaticus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 384
Lactarius lacunarum
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 121
Lactarius mairei
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 51
Lactarius obscuratus
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 64
Lactarius pubescens
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 444
Lactarius quieticolor
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 100
Lactarius semisanguifluus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 132
Lactarius serifluus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 180
Lactarius spinosulus
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 59
Lactarius uvidus
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 58
Lactarius vietus
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 440
Lactifluus piperatus
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 93
Lactifluus vellereus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 359
Lactuca macrophylla
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 243
Lacunisphaera limnophila
- Group
- Microorganisms and protists
- Peak month
- January
- Records since 2000
- 140
Lacydonia miranda
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 403
Ladder Flapwort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 4,463
Ladder-backed Hover Fly
- Group
- True flies
- Peak month
- April
- Records since 2000
- 14,120
Laddered Pixie-cup Lichen
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 1,258
Ladoga camilla
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 21,553
Lady Amherst's Pheasant
- Group
- Birds
- Peak month
- April
- Records since 2000
- 156
Lady Orchid
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 138
Lady's Bedstraw
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 15,904
Lady's-Mantle
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 2,703
Lady's-mantle [Alchemilla glabra]
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,413
Lady-fern
- Group
- Ferns and horsetails
- Peak month
- July
- Records since 2000
- 5,010
Ladybird beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 9,453
Ladybird beetle
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 982
Ladybird Fly
- Group
- True flies
- Peak month
- July
- Records since 2000
- 681
Laemostenus terricola
- Group
- Beetles
- Peak month
- April
- Records since 2000
- 184
Laetmonice hystrix
- Group
- Worms (annelids)
- Peak month
- July
- Records since 2000
- 445
Lafoea dumosa
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 180
Lagenipora lepralioides
- Group
- Bryozoans
- Peak month
- August
- Records since 2000
- 510
Lagotia viridis
- Group
- Microorganisms and protists
- Peak month
- June
- Records since 2000
- 2,007
Lagynodes pallidus
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 88
Laimella longicauda
- Group
- Roundworms
- Peak month
- November
- Records since 2000
- 73
Laingia psammae
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 61
Lake Limpet
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 1,053
Lakezone lichen
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 60
Lamarck's Christmas Tree Worm
- Group
- Worms (annelids)
- Peak month
- June
- Records since 2000
- 8,023
Lambiella furvella
- Group
- Lichens
- Peak month
- April
- Records since 2000
- 135
Lamellaria latens
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 110
Laminaria ochroleuca
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 709
Lamprochernes nodosus
- Group
- Mites, harvestmen and other arachnids
- Peak month
- September
- Records since 2000
- 91
Lamprochromus bifasciatus
- Group
- True flies
- Peak month
- July
- Records since 2000
- 78
Lampronia oehlmaniella
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 91
Lampronia praelatella
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 53
Lampropteryx otregiata
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 127
Lamprotettix nitidulus
- Group
- True bugs
- Peak month
- September
- Records since 2000
- 274
Lamyra marginata
- Group
- True flies
- Peak month
- July
- Records since 2000
- 644
Lanassa venusta
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 499
Lanceolated Warbler
- Group
- Birds
- Peak month
- October
- Records since 2000
- 160
Landlady's Wig
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 590
Langmaids yellow underwing
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 93
Lankesteria ascidiae
- Group
- Microorganisms and protists
- Records since 2000
- 72
- Counties with records
- 2
Lanzia echinophila
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 80
Laomedea flexuosa
- Group
- Jellyfish, corals and anemones
- Peak month
- May
- Records since 2000
- 374
Laona quadrata
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 58
Laonice bahusiensis
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 7,827
Laonice cirrata
- Group
- Worms (annelids)
- Peak month
- July
- Records since 2000
- 766
Laonice sarsi
- Group
- Worms (annelids)
- Peak month
- October
- Records since 2000
- 818
Laonome kroyeri
- Group
- Worms (annelids)
- Peak month
- September
- Records since 2000
- 507
Lapidary Snail
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 1,108
Lapland amphidium moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 231
Lapland Longspur
- Group
- Birds
- Peak month
- October
- Records since 2000
- 4,008
Lappet moth
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 106
Larch Bolete
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 1,243
Larch case-bearer
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 66
Larch hawk moth
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 1,008
Larch Ladybird
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 2,975
Larch pug
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 110
Large Amber Snail
- Group
- Molluscs
- Peak month
- June
- Records since 2000
- 2,971
Large Atlantic Pocket-moss
- Group
- Mosses
- Peak month
- January
- Records since 2000
- 66
Large Bindweed
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 4,274
Large Bitter-cress
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 829
Large Brook Dun
- Group
- Mayflies
- Peak month
- April
- Records since 2000
- 1,160
Large Cinnamon Sedge
- Group
- Caddisflies
- Peak month
- April
- Records since 2000
- 5,444
Large Cone-head
- Group
- Grasshoppers and crickets
- Peak month
- September
- Records since 2000
- 78
Large copper
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 54
Large Dark Olive
- Group
- Mayflies
- Peak month
- April
- Records since 2000
- 1,228
Large ear
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 270
Large Emerald
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 1,054
Large Flax Flea Beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,338
Large Fruit Bark Beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 56
Large Fruit-tree Tortrix
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 1,863
Large Garden Bumble Bee
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 889
Large Gray Willow
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 5,535
Large Heath
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 3,140
Large Hook-moss
- Group
- Mosses
- Peak month
- May
- Records since 2000
- 791
Large Ivy Tortrix
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 837
Large Mantis Dung Fly
- Group
- True flies
- Peak month
- June
- Records since 2000
- 1,329
Large Marsh Grasshopper
- Group
- Grasshoppers and crickets
- Peak month
- August
- Records since 2000
- 270
Large Marsh Horsefly
- Group
- True flies
- Peak month
- July
- Records since 2000
- 765
Large Meadow Fly
- Group
- True flies
- Peak month
- May
- Records since 2000
- 664
Large Nutmeg
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 1,502
Large pine weevil
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 827
Large Ranunculus [moth]
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 542
Large Raspberry Aphid
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 55
Large Red Damselfly
- Group
- Dragonflies and damselflies
- Peak month
- May
- Records since 2000
- 143,697
Large Red Tailed Bumble Bee
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 68,667
Large Scabious Mining Bee
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 693
Large Tabby
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 227
Large Thistle Aphid
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 134
Large Thistle Weevil
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 58
Large thorn
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 104
Large Thyme
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 167
Large Tiger Hoverfly
- Group
- True flies
- Peak month
- August
- Records since 2000
- 1,933
Large Tiphia
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 458
Large tortoiseshell
- Group
- Butterflies and moths
- Peak month
- April
- Records since 2000
- 61
Large twin-spot carpet
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 453
Large Velvet Ant
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 109
Large Wainscot
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 725
Large White
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 556,981
Large White-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 3,142
Large yellow feather moss
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 62
Large Yellow Underwing
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 31,787
Large Yellow-Faced Bee
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 193
Large-eyed Rabbitfish
- Group
- Fish
- Peak month
- September
- Records since 2000
- 292
Large-flowered Evening-primrose
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,151
Large-flowered Hemp-nettle
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 255
Large-flowered Pink-sorrel
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 119
Large-grooved diving beetle
- Group
- Beetles
- Peak month
- October
- Records since 2000
- 1,782
Large-leaved Lime
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 554
Large-mouthed Valve Snail
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 295
Largeflower tickseed
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 143
Largeleaf Avens
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 578
Larger Mouse-tail Moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 6,047
Larger Noterus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 2,920
Laricobius erichsonii
- Group
- Beetles
- Peak month
- April
- Records since 2000
- 73
Larinus carlinae
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 218
Larinus planus
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 131
Lasaea adansoni
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 173
Lasiobolus papillatus
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 61
Lasioglossum cupromicans
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 306
Lasioglossum laevigatum
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 206
Lasioglossum minutissimum
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 370
Lasioglossum parvulum
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 269
Lasioglossum pauperatum
- Group
- Bees, wasps and ants
- Peak month
- April
- Records since 2000
- 99
Lasioglossum prasinum
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 98
Lasioglossum punctatissimum
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 402
Lasioglossum puncticolle
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 131
Lasioglossum zonulum
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 359
Lasiomma seminitidum
- Group
- True flies
- Peak month
- April
- Records since 2000
- 1,801
Lasiomma strigilatum
- Group
- True flies
- Peak month
- April
- Records since 2000
- 256
Lasiopogon cinctus
- Group
- True flies
- Peak month
- May
- Records since 2000
- 299
Lasiosina cinctipes
- Group
- True flies
- Peak month
- July
- Records since 2000
- 56
Lasiosphaeria ovina
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 218
Lasiosphaeris hirsuta
- Group
- Fungi
- Peak month
- April
- Records since 2000
- 66
Lasius alienus
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 256
Lasius emarginatus
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 92
Lasius platythorax
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 232
Lasius psammophilus
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 51
Late Birch Leaf Edgeminer
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 59
Late Fall Oyster Mushroom
- Group
- Fungi
- Peak month
- December
- Records since 2000
- 475
Late Needle Fly
- Group
- Stoneflies
- Peak month
- September
- Records since 2000
- 2,409
Lateroligia ophiogramma
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 450
Lathagrium auriforme
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 1,289
Lathagrium cristatum
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 135
Lathagrium fuscovirens
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 427
Lathbury's Nomad Bee
- Group
- Bees, wasps and ants
- Peak month
- April
- Records since 2000
- 808
Lathrobium brunnipes
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 404
Lathrobium elongatum
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 108
Lathrobium fulvipenne
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 109
Lathrobium geminum
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 75
Lathrostizus macrostoma
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 60
Lathyrus grandiflorus
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 73
Lathyrus oleraceus
- Group
- Flowering plants
- Peak month
- January
- Records since 2000
- 90
Lathys humilis
- Group
- Spiders
- Peak month
- June
- Records since 2000
- 169
Latilactobacillus curvatus
- Group
- Microorganisms and protists
- Peak month
- February
- Records since 2000
- 117
Latticed Heath
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 1,107
Latticed Sheet-web Weaver
- Group
- Spiders
- Peak month
- July
- Records since 2000
- 571
Lauderia annulata
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 1,279
Lauderia mediterranea
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 518
Laughing Gull
- Group
- Birds
- Peak month
- February
- Records since 2000
- 352
Laura psylla
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 539
Laurencia dendroidea
- Group
- Seaweeds and algae
- Peak month
- July
- Records since 2000
- 50
Laurer’s catillaria
- Group
- Lichens
- Peak month
- December
- Records since 2000
- 81
Laurustinus
- Group
- Flowering plants
- Peak month
- March
- Records since 2000
- 6,936
Lauxania cylindricornis
- Group
- True flies
- Peak month
- May
- Records since 2000
- 75
Lavender-cotton
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 480
Laver Spire Snail
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 5,079
Lawson's Cypress
- Group
- Conifers
- Peak month
- July
- Records since 2000
- 1,753
Lax-flowered Sea-lavender
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 146
Laxitextum bicolor
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 82
Leach's Bithynia
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 1,558
Leach's Spider Crab
- Group
- Crustaceans
- Peak month
- August
- Records since 2000
- 665
Leach's squat lobster
- Group
- Crustaceans
- Peak month
- September
- Records since 2000
- 2,080
Leach's/Townsend's/Ainley's Storm-Petrel
- Group
- Birds
- Peak month
- September
- Records since 2000
- 1,800
Lead belle
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 74
Lead-coloured drab
- Group
- Butterflies and moths
- Peak month
- March
- Records since 2000
- 121
Lead-moss
- Group
- Mosses
- Peak month
- October
- Records since 2000
- 231
Leaden Spider Wasp
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 515
Leaf beetle
- Group
- Beetles
- Peak month
- November
- Records since 2000
- 1,679
Leaf beetle
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 596
Leaf beetle
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 565
Leaf-miner fly
- Group
- True flies
- Peak month
- June
- Records since 2000
- 537
Leafhopper
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 1,840
Leafhopper
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 1,145
Leafhopper
- Group
- True bugs
- Peak month
- July
- Records since 2000
- 875
Leafhopper
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 543
Leafminer
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 1,163
Leafscale Gulper Shark
- Group
- Fish
- Peak month
- April
- Records since 2000
- 724
Leafy Brain
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 597
Least Black Arches
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 1,636
Least Carpet
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 4,668
Least chink shell
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 247
Least Duckweed
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 4,623
Least Sandpiper
- Group
- Birds
- Peak month
- April
- Records since 2000
- 322
Least skeleton shrimp
- Group
- Crustaceans
- Peak month
- September
- Records since 2000
- 3,129
Least weasel
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 1,725
Least Yellow Underwing
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 1,000
Least Yellow-sorrel
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 505
Leatherback Turtle
- Group
- Reptiles
- Peak month
- October
- Records since 2000
- 121
Leatherleaf arrowwood
- Group
- Flowering plants
- Peak month
- November
- Records since 2000
- 64
Lecania cyrtellina
- Group
- Lichens
- Peak month
- February
- Records since 2000
- 220
Lecania hutchinsiae
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 380
Lecania inundata
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 319
Lecania lichen
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 1,390
Lecania lichen
- Group
- Lichens
- Peak month
- April
- Records since 2000
- 1,379
Lecania naegelii
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 701
Lecania rabenhorstii
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 367
Lecania turicensis
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 184
Lecanora aitema
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 195
Lecanora alboflavida
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 307
Lecanora argentata
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 274
Lecanora barkmaniana
- Group
- Lichens
- Peak month
- March
- Records since 2000
- 251
Lecanora caesiosora
- Group
- Lichens
- Peak month
- March
- Records since 2000
- 106
Lecanora compallens
- Group
- Lichens
- Peak month
- March
- Records since 2000
- 233
Lecanora conferta
- Group
- Lichens
- Peak month
- January
- Records since 2000
- 78
Lecanora conizaeoides
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 2,340
Lecanora coppinsii
- Group
- Lichens
- Records since 2000
- 84
- NBN Atlas records since 2000
- 76
Lecanora handelii
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 124
Lecanora helicopis
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 242
Lecanora jamesii
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 774
Lecanora orosthea
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 1,249
Lecanora pannonica
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 140
Lecanora soralifera
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 1,632
Lecanora stenotropa
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 120
Leccinum cyaneobasileucum
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 230
Leccinum schistophilum
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 58
Leches twist moth
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 158
Lecidea grisella
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 1,615
Lecidea hypopta
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 115
Lecidea lactea
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 165
Lecidea lichen
- Group
- Lichens
- Peak month
- April
- Records since 2000
- 216
Lecidea lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 208
Lecidea lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 113
Lecidea lichen
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 78
Lecidea nylanderi
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 107
Lecidea swartzioidea
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 59
Lecidea turgidula
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 165
Lecidella asema
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 415
Lecidella carpathica
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 208
Lecidella lichen
- Group
- Lichens
- Peak month
- March
- Records since 2000
- 6,871
Lecidella lichen
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 3,601
Lecidella meiococca
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 80
Lecythophora canina
- Group
- Fungi
- Peak month
- January
- Records since 2000
- 69
Leeches
- Group
- Worms (annelids)
- Peak month
- April
- Records since 2000
- 2,391
Legaliana badia
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 272
Legionella pneumophila
- Group
- Microorganisms and protists
- Peak month
- May
- Records since 2000
- 192
Leia fascipennis
- Group
- True flies
- Peak month
- June
- Records since 2000
- 106
Leiobunum blackwalli
- Group
- Mites, harvestmen and other arachnids
- Peak month
- September
- Records since 2000
- 338
Leiochone johnstoni
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 1,019
Leiochone leiopygos
- Group
- Worms (annelids)
- Peak month
- September
- Records since 2000
- 132
Leiodes calcarata
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 89
Leiodes obesa
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 124
Leiodes rufipennis
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 187
Leiopus nebulosus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 412
Leiosoma deflexum
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 423
Leiostyla anglica
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 232
Leistus ferrugineus
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 735
Leistus fulvibarbis
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,081
Leistus rufomarginatus
- Group
- Beetles
- Peak month
- October
- Records since 2000
- 506
Leistus spinibarbis
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,376
Leistus terminatus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 424
Leistus terminatus
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 96
Leitoscoloplos mammosus
- Group
- Worms (annelids)
- Peak month
- May
- Records since 2000
- 1,140
Lejogaster metallina
- Group
- True flies
- Peak month
- June
- Records since 2000
- 745
Lejogaster tarsata
- Group
- True flies
- Peak month
- June
- Records since 2000
- 180
Lekanesphaera hookeri
- Group
- Crustaceans
- Peak month
- April
- Records since 2000
- 201
Lekanesphaera levii
- Group
- Crustaceans
- Peak month
- October
- Records since 2000
- 121
Lekanesphaera rugicauda
- Group
- Crustaceans
- Peak month
- April
- Records since 2000
- 124
Lema cyanella
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 187
Lemanea fluviatilis
- Group
- Seaweeds and algae
- Peak month
- July
- Records since 2000
- 432
Lembos websteri
- Group
- Crustaceans
- Peak month
- August
- Records since 2000
- 99
Lemon Sole
- Group
- Fish
- Peak month
- August
- Records since 2000
- 94,694
Lemon-scented Fern
- Group
- Ferns and horsetails
- Peak month
- July
- Records since 2000
- 1,867
Lempke's Gold Spot
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 483
Lendemeriella lucifuga
- Group
- Lichens
- Peak month
- October
- Records since 2000
- 87
Lenisa geminipuncta
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 126
Lenten-rose
- Group
- Flowering plants
- Peak month
- March
- Records since 2000
- 95
Lentinellus cochleatus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 144
Lentinus substrictus
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 134
Lentinus tigrinus
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 51
Lenzites betulinus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 250
Leocarpus fragilis
- Group
- Microorganisms and protists
- Peak month
- October
- Records since 2000
- 100
Leodice harassii
- Group
- Worms (annelids)
- Peak month
- June
- Records since 2000
- 190
Leopard Earthball
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 574
Leopard Moth
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 613
Leopard-spotted Goby
- Group
- Fish
- Peak month
- August
- Records since 2000
- 3,354
Leopardplant
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 636
Leopoldius signatus
- Group
- True flies
- Peak month
- September
- Records since 2000
- 190
Lepadogaster candolii
- Group
- Fish
- Peak month
- August
- Records since 2000
- 73
Lepidepecreum longicorne
- Group
- Crustaceans
- Peak month
- April
- Records since 2000
- 426
Lepidocyrtus cyaneus
- Group
- Springtails
- Peak month
- November
- Records since 2000
- 144
Lepidocyrtus lanuginosus
- Group
- Springtails
- Peak month
- May
- Records since 2000
- 80
Lepidocyrtus lignorum
- Group
- Springtails
- Peak month
- August
- Records since 2000
- 1,226
Lepidonotus clava
- Group
- Worms (annelids)
- Peak month
- July
- Records since 2000
- 81
Lepidostoma basale
- Group
- Caddisflies
- Peak month
- September
- Records since 2000
- 1,403
Lepidozia pearsonii
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 321
Lepinotus patruelis
- Group
- Other insects
- Peak month
- November
- Records since 2000
- 81
Lepiota boudieri
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 171
Lepiota brunneoincarnata
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 62
Lepiota castanea
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 270
Lepiota echinella
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 76
Lepiota erminea
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 147
Lepiota felina
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 87
Lepiota grangei
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 61
Lepiota ignivolvata
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 61
Lepiota magnispora
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 120
Lepiota ochraceofulva
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 64
Lepiota oreadiformis
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 89
Lepiota pseudolilacea
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 98
Lepiota rufipes
- Group
- Fungi
- Peak month
- January
- Records since 2000
- 86
Lepiota subalba
- Group
- Fungi
- Peak month
- January
- Records since 2000
- 58
Lepiota subincarnata
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 98
Lepista irina
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 70
Lepista panaeolus
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 157
Lepista personata
- Group
- Fungi
- Peak month
- November
- Records since 2000
- 347
Lepista sordida
- Group
- Fungi
- Peak month
- November
- Records since 2000
- 265
Lepra aspergilla
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 433
Lepra corallina
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 1,493
Lepra excludens
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 130
Lepra monogona
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 95
Lepra multipuncta
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 973
Lepra pulvinata
- Group
- Lichens
- Peak month
- January
- Records since 2000
- 114
Lepraria caesioalba
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 369
Lepraria elobata
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 50
Lepraria jackii
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 199
Lepraria membranacea
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 434
Lepraria nivalis
- Group
- Lichens
- Peak month
- November
- Records since 2000
- 176
Lepraria rigidula
- Group
- Lichens
- Peak month
- March
- Records since 2000
- 364
Lepraria umbricola
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 187
Leprocaulon calcicola
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 544
Leproplaca chrysodeta
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 593
Leproplaca cirrochroa
- Group
- Lichens
- Peak month
- November
- Records since 2000
- 90
Leproplaca xantholyta
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 206
Leptacis tipulae
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 530
Leptasterias muelleri
- Group
- Starfish and sea urchins
- Peak month
- August
- Records since 2000
- 619
Lepthyphantes minutus
- Group
- Spiders
- Peak month
- October
- Records since 2000
- 187
Leptobarbula berica
- Group
- Mosses
- Peak month
- January
- Records since 2000
- 115
Leptocera fontinalis
- Group
- True flies
- Peak month
- July
- Records since 2000
- 202
Leptocera nigra
- Group
- True flies
- Peak month
- July
- Records since 2000
- 143
Leptocerus lusitanicus
- Group
- Caddisflies
- Peak month
- June
- Records since 2000
- 178
Leptocerus tineiformis
- Group
- Caddisflies
- Peak month
- July
- Records since 2000
- 2,127
Leptocheirus hirsutimanus
- Group
- Crustaceans
- Peak month
- August
- Records since 2000
- 2,848
Leptocheirus pectinatus
- Group
- Crustaceans
- Peak month
- June
- Records since 2000
- 868
Leptocheirus pilosus
- Group
- Crustaceans
- Peak month
- April
- Records since 2000
- 91
Leptocheirus tricristatus
- Group
- Crustaceans
- Peak month
- January
- Records since 2000
- 55
Leptocylindrus danicus
- Group
- Seaweeds and algae
- Peak month
- July
- Records since 2000
- 840
Leptocylindrus minimus
- Group
- Seaweeds and algae
- Peak month
- July
- Records since 2000
- 796
Leptodontium moss
- Group
- Mosses
- Peak month
- October
- Records since 2000
- 291
Leptogaster guttiventris
- Group
- True flies
- Peak month
- July
- Records since 2000
- 158
Leptognathia breviremis
- Group
- Crustaceans
- Peak month
- April
- Records since 2000
- 173
Leptognathia paramanca
- Group
- Crustaceans
- Peak month
- May
- Records since 2000
- 94
Leptohalysis scottii
- Group
- Microorganisms and protists
- Peak month
- December
- Records since 2000
- 378
Leptoiulus belgicus
- Group
- Millipedes
- Peak month
- June
- Records since 2000
- 64
Leptolaimus elegans
- Group
- Roundworms
- Peak month
- November
- Records since 2000
- 108
Leptometra celtica
- Group
- Starfish and sea urchins
- Peak month
- July
- Records since 2000
- 511
Lepton squamosum
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 322
Leptopeza flavipes
- Group
- True flies
- Peak month
- June
- Records since 2000
- 142
Leptophlebia marginata
- Group
- Mayflies
- Peak month
- April
- Records since 2000
- 253
Leptophlebia vespertina
- Group
- Mayflies
- Peak month
- April
- Records since 2000
- 233
Leptosciarella rejecta
- Group
- True flies
- Peak month
- May
- Records since 2000
- 108
Leptosciarella trochanterata
- Group
- True flies
- Peak month
- May
- Records since 2000
- 102
Leptosciarella viatica
- Group
- True flies
- Peak month
- March
- Records since 2000
- 67
Leptosiphonia brodiei
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 121
Leptosphaeria doliolum
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 81
Leptospora rubella
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 639
Leptosporomyces fuscostratus
- Group
- Fungi
- Peak month
- November
- Records since 2000
- 103
Leptosynapta bergensis
- Group
- Starfish and sea urchins
- Peak month
- June
- Records since 2000
- 1,428
Leptosynapta decaria
- Group
- Starfish and sea urchins
- Peak month
- March
- Records since 2000
- 240
Leptosynapta minuta
- Group
- Starfish and sea urchins
- Peak month
- April
- Records since 2000
- 149
Leptothorax nylanderi
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 298
Leptotrochila ranunculi
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 140
Leptura aurulenta
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 257
Leptura quadrifasciata
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 1,971
Leptusa fumida
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 157
Leptusa ruficollis
- Group
- Beetles
- Peak month
- October
- Records since 2000
- 60
Lescur's pohlia moss
- Group
- Mosses
- Peak month
- October
- Records since 2000
- 129
Lesne's Earwig
- Group
- Other insects
- Peak month
- August
- Records since 2000
- 456
Lesser Bird's-claw Beard-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 14,503
Lesser Black-backed Gull
- Group
- Birds
- Peak month
- August
- Records since 2000
- 1,165,954
Lesser Blackclock
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 1,299
Lesser Bladderwort
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 347
Lesser Bloody-nosed Beetle
- Group
- Beetles
- Peak month
- April
- Records since 2000
- 618
Lesser Broad Bordered Yellow Underwing
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 9,868
Lesser Bulin
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 1,329
Lesser Bulrush
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 827
Lesser Burrdock
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 7,906
Lesser Butterfly-orchid
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 606
Lesser Calamint
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 54
Lesser Celandine
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 21,114
Lesser Centaury
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 219
Lesser Clubmoss
- Group
- Clubmosses
- Peak month
- July
- Records since 2000
- 1,137
Lesser Cockroach
- Group
- Other insects
- Peak month
- August
- Records since 2000
- 589
Lesser Cow-horn Bog-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 3,000
Lesser cream wave
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 269
Lesser Crested Tern
- Group
- Birds
- Peak month
- December
- Records since 2000
- 138
Lesser cylinder-anemone
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 10,169
Lesser Diving-beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 538
Lesser Earwig
- Group
- Other insects
- Peak month
- August
- Records since 2000
- 319
Lesser emperor
- Group
- Dragonflies and damselflies
- Peak month
- July
- Records since 2000
- 3,235
Lesser Featherwort
- Group
- Liverworts
- Peak month
- April
- Records since 2000
- 7,570
Lesser Flying Squid
- Group
- Molluscs
- Peak month
- November
- Records since 2000
- 3,484
Lesser fork-beard
- Group
- Fish
- Peak month
- March
- Records since 2000
- 82
Lesser Gooseberry Sea Squirt
- Group
- Sea squirts
- Peak month
- September
- Records since 2000
- 511
Lesser Gray Shrike
- Group
- Birds
- Peak month
- September
- Records since 2000
- 491
Lesser Hornet Hoverfly
- Group
- True flies
- Peak month
- August
- Records since 2000
- 5,083
Lesser Horseshoe Bat
- Group
- Mammals
- Peak month
- June
- Records since 2000
- 19,920
Lesser Kestrel
- Group
- Birds
- Peak month
- March
- Records since 2000
- 78
Lesser Knapweed
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 20,597
Lesser Marsh Grasshopper
- Group
- Grasshoppers and crickets
- Peak month
- August
- Records since 2000
- 5,628
Lesser Marshwort
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 125
Lesser Meadow-rue
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 483
Lesser mealworm
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 116
Lesser noctule
- Group
- Mammals
- Peak month
- June
- Records since 2000
- 4,848
Lesser Periwinkle [plant]
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 2,910
Lesser Pipefish
- Group
- Fish
- Peak month
- September
- Records since 2000
- 438
Lesser Pocket-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 11,582
Lesser Pond-sedge
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,786
Lesser Pondweed
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 246
Lesser Ramshorn Snail
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 107
Lesser sand-eel, Raitt's Sandeel
- Group
- Fish
- Peak month
- December
- Records since 2000
- 32,762
Lesser Scaup
- Group
- Birds
- Peak month
- March
- Records since 2000
- 2,556
Lesser Screw-moss
- Group
- Mosses
- Peak month
- January
- Records since 2000
- 1,219
Lesser Sea-spurrey
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,038
Lesser Skullcap
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 778
Lesser Spearwort
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 7,405
Lesser Spotted Woodpecker
- Group
- Birds
- Peak month
- April
- Records since 2000
- 1,025
Lesser Stag Beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 5,110
Lesser Stitchwort
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 9,336
Lesser Striated Feather-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 353
Lesser Swallow Prominent
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 2,833
Lesser Swine-cress
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 2,225
Lesser Treble-bar
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 668
Lesser Trefoil
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 9,703
Lesser Tussock-sedge
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 165
Lesser Twayblade
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 389
Lesser water-measurer
- Group
- True bugs
- Peak month
- April
- Records since 2000
- 75
Lesser Water-parsnip
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 1,555
Lesser Water-plantain
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 279
Lesser weever
- Group
- Fish
- Peak month
- August
- Records since 2000
- 16,075
Lesser Whipwort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 1,012
Lesser White-fronted Goose
- Group
- Birds
- Peak month
- January
- Records since 2000
- 601
Lesser Whitethroat
- Group
- Birds
- Peak month
- May
- Records since 2000
- 59,298
Lesser Yellow Underwing
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 11,818
Lesser Yellowlegs
- Group
- Birds
- Peak month
- October
- Records since 2000
- 2,959
Lesser Yoke-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 6,411
Lesser-spotted pinion
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 140
Lesteva longoelytrata
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 484
Lesteva pubescens
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 64
Lesteva sicula
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 716
Lestiphorus bicinctus
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 150
Lestodiplosis chrysanthemi
- Group
- True flies
- Peak month
- July
- Records since 2000
- 50
Lestodiplosis juniperina
- Group
- True flies
- Peak month
- June
- Records since 2000
- 54
Leucandra ananas
- Group
- Sponges
- Peak month
- June
- Records since 2000
- 134
Leucania obsoleta
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 233
Leucanthemum ircutianum
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 242
Leuckartiara octona
- Group
- Jellyfish, corals and anemones
- Peak month
- March
- Records since 2000
- 240
Leucoagaricus badhamii
- Group
- Fungi
- Peak month
- November
- Records since 2000
- 99
Leucoagaricus leucothites
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 257
Leucoagaricus sericifer
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 51
Leucobryum moss
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 142
Leucocoprinus birnbaumii
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 56
Leucocoprinus brebissonii
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 243
Leucocybe connata
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 214
Leucocybe houghtonii
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 62
Leucodermia leucomelos
- Group
- Lichens
- Peak month
- September
- Records since 2000
- 267
Leucogyrophana mollusca
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 72
Leucon nasica
- Group
- Crustaceans
- Peak month
- January
- Records since 2000
- 407
Leuconia nivea
- Group
- Sponges
- Peak month
- September
- Records since 2000
- 221
Leucophenga maculata
- Group
- True flies
- Peak month
- July
- Records since 2000
- 115
Leucophora grisella
- Group
- True flies
- Peak month
- July
- Records since 2000
- 74
Leucophora obtusa
- Group
- True flies
- Peak month
- April
- Records since 2000
- 252
Leucophora personata
- Group
- True flies
- Peak month
- May
- Records since 2000
- 224
Leucophytia bidentata
- Group
- Molluscs
- Peak month
- October
- Records since 2000
- 66
Leucoptera laburnella
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 192
Leucoptera malifoliella
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 209
Leucosolenia botryoides
- Group
- Sponges
- Peak month
- June
- Records since 2000
- 102
Leucosolenia complicata
- Group
- Sponges
- Peak month
- June
- Records since 2000
- 281
Leucosporidium scottii
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 540
Leucothecium emdenii
- Group
- Fungi
- Peak month
- January
- Records since 2000
- 58
Leucothoe incisa
- Group
- Crustaceans
- Peak month
- June
- Records since 2000
- 1,763
Leucothoe lilljeborgi
- Group
- Crustaceans
- Peak month
- May
- Records since 2000
- 998
Leucothoe procera
- Group
- Crustaceans
- Peak month
- August
- Records since 2000
- 444
Leucothoe spinicarpa
- Group
- Crustaceans
- Peak month
- May
- Records since 2000
- 263
Leuctra moselyi
- Group
- Stoneflies
- Peak month
- September
- Records since 2000
- 307
Levier's Beardless-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 67
Levinsenia gracilis
- Group
- Worms (annelids)
- Peak month
- May
- Records since 2000
- 3,848
Lewinskya rupestris
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 382
Liancalus virens
- Group
- True flies
- Peak month
- June
- Records since 2000
- 229
Libertasomyces myopori
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 540
Libertasomyces platani
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 540
Liberty Cap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 503
Lichenicolous fungus
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 108
Lichenoconium erodens
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 99
Lichenoconium xanthoriae
- Group
- Fungi
- Peak month
- December
- Records since 2000
- 89
Lichenodiplis lecanorae
- Group
- Fungi
- Peak month
- June
- Records since 2000
- 92
Lichenomphalia alpina
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 168
Lichenomphalia hudsoniana
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 152
Lichtensia viburni
- Group
- True bugs
- Peak month
- March
- Records since 2000
- 214
Licinus depressus
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 79
Licorice-plant
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 181
Ligeria angusticornis
- Group
- True flies
- Peak month
- July
- Records since 2000
- 69
Light Arches
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 2,024
Light Blue Blood Lichen
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 939
Light Brocade
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 1,428
Light Brown Apple Moth
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 16,070
Light Bulb Tunicate
- Group
- Sea squirts
- Peak month
- June
- Records since 2000
- 7,424
Light Crimson Underwing
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 101
Light Emerald
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 7,541
Light knot grass
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 188
Ligidium hypnorum
- Group
- Crustaceans
- Peak month
- August
- Records since 2000
- 80
Ligurian Leafhopper
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 240
Lilac
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 6,008
Lilac beauty
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 312
Lilac Bonnet
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 2,278
Lilac Pinkgill
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 613
Lilies-of-the-field
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 51
Lilium pyrenaicum
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 305
Liljeborgia kinahani
- Group
- Crustaceans
- Peak month
- September
- Records since 2000
- 185
Liljeborgia pallida
- Group
- Crustaceans
- Peak month
- July
- Records since 2000
- 258
Lilljeborg’s pea mussel
- Group
- Molluscs
- Peak month
- March
- Records since 2000
- 62
Lily Beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 2,178
Lily-of-the-valley
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 1,200
Limacella delicata
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 84
Limacellopsis guttata
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 62
Limapontia depressa
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 60
Limaria loscombi
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 267
Limarus zenkeri
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 63
Lime
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 909
Lime Hawk-moth
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 1,521
Lime nail gall, Bugle gall
- Group
- Mites, harvestmen and other arachnids
- Peak month
- May
- Records since 2000
- 1,068
Lime-speck Pug
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 2,890
Limestone Bedstraw
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 459
Limestone Disc Lichen
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 3,582
Limestone Fern
- Group
- Ferns and horsetails
- Peak month
- June
- Records since 2000
- 163
Limestone Lobed Firedot
- Group
- Lichens
- Peak month
- June
- Records since 2000
- 3,949
Limestone maidenhair spleenwort
- Group
- Ferns and horsetails
- Peak month
- July
- Records since 2000
- 924
Limestone Waxcap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 143
Limnaecia phragmitella
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 351