
| Acer campestre | Field Maple | 1352 |
| Acer pseudoplatanus | Sycamore | 687 |
| Acer sp. | a maple | 2 |
| Achillea millefolium | Yarrow | 2008 |
| Achillea ptarmica | Sneezewort | 104 |
| Aconitum napellus agg. | Monk’s-hood | 3 |
| Acorus calamus | Sweet-flag | 2 |
| Adiantum capillus-veneris | Maidenhair Fern | 1 |
| Adonis annua | Pheasant’s Eye | 1 |
| Adoxa moschatellina | Moschatel | 292 |
| Aegopodium podagraria | Ground-elder | 39 |
| Aesculus hippocastanum | Horse-chestnut | 85 |
| Aethusa cynapium | Fool’s Parsley | 46 |
| Agrimonia eupatoria | Agrimony | 1221 |
| Agrimonia procera | Fragrant Agrimony | 29 |
| Agrostemma githago | Corncockle | 23 |
| Agrostis canina sens.str. | Brown Bent | 6 |
| Agrostis capillaris | Common Bent | 214 |
| Agrostis curtisii | Bristle Bent | 360 |
| Agrostis sp. | a bent-grass | 3180 |
| Agrostis stolonifera | Creeping Bent | 103 |
| Aira caryophyllea | Silver Hair-grass | 203 |
| Aira praecox | Early Hair-grass | 93 |
| Ajuga reptans | Bugle | 1175 |
| Alchemilla vulgaris agg. | Lady’s-mantle | 1 |
| Alisma plantago-aquatica | Water-plantain | 172 |
| Alliaria petiolata | Garlic Mustard | 402 |
| Allium carinatum | Keeled Garlic | 1 |
| Allium oleraceum | Field Garlic | 2 |
| Allium sp. | an onion | 1 |
| Allium ursinum | Ramsons | 174 |
| Allium vineale | Wild Onion | 45 |
| Alnus glutinosa | Alder | 508 |
| Alopecurus bulbosus | Bulbous Foxtail | 3 |
| Alopecurus geniculatus | Marsh Foxtail | 38 |
| Alopecurus myosuroides | Black-grass | 14 |
| Alopecurus pratensis | Meadow Foxtail | 229 |
| Althaea officinalis | Marsh-mallow | 11 |
| Ammophila arenaria | Marram | 9 |
| Anacamptis pyramidalis | Pyramidal Orchid | 72 |
| Anagallis arvensis | Scarlet Pimpernel | 729 |
| Anagallis arvensis ssp. arvensis | Scarlet Pimpernel | 1 |
| Anagallis minima | Chaffweed | 71 |
| Anagallis tenella | Bog Pimpernel | 143 |
| Anchusa arvensis | Bugloss | 33 |
| Anchusa officinalis | Alkanet | 4 |
| Anemone apennina | Blue Anemone | 1 |
| Anemone nemorosa | Wood Anemone | 329 |
| Angelica sylvestris | Wild Angelica | 925 |
| Anisantha sterilis | Barren Brome | 353 |
| Anthemis arvensis | Corn Chamomile | 16 |
| Anthemis cotula | Stinking Chamomile | 135 |
| Anthoxanthum odoratum | Sweet Vernal Grass | 1989 |
| Anthriscus caucalis | Bur Parsley | 1 |
| Anthriscus sylvestris | Cow Parsley | 906 |
| Anthyllis vulneraria | Kidney Vetch | 115 |
| Antirrhinum majus | Snapdragon | 1 |
| Aphanes arvensis sens.str. | Parsley-piert | 304 |
| Apium graveolens | Wild Celery | 48 |
| Apium inundatum | Lesser Marshwort | 13 |
| Apium nodiflorum | Fool’s Water-cress | 519 |
| Aquilegia vulgaris | Columbine | 18 |
| Arabidopsis thaliana | Thale Cress | 46 |
| Arabis hirsuta | Hairy Rock-cress | 14 |
| Arctium lappa | Greater Burdock | 20 |
| Arctium minus | Lesser Burdock | 1771 |
| Arenaria serpyllifolia | Thyme-leaved Sandwort | 371 |
| Armeria maritima | Thrift | 100 |
| Armoracia rusticana | Horse-radish | 8 |
| Arnoseris minima | Lamb’s Succory | 2 |
| Arrhenatherum elatius | False Oat-grass | 2269 |
| Artemisia absinthium | Wormwood | 5 |
| Artemisia vulgaris | Mugwort | 117 |
| Arum maculatum | Lords-and-ladies | 1261 |
| Asperula cynanchica | Squinancywort | 415 |
| Asplenium adiantum-nigrum | Black Spleenwort | 129 |
| Asplenium marinum | Sea Spleenwort | 1 |
| Asplenium ruta-muraria | Wall-rue | 116 |
| Asplenium trichomanes | Maidenhair Spleenwort | 70 |
| Assarum europaeum | 1 | |
| Aster lanceolatus x novi-belgii (A. x salignus) | Common Michaelmas-daisy | 3 |
| Aster sp. | a michaelmas-daisy | 2 |
| Aster tripolium | Sea Aster | 80 |
| Athyrium filix-femina | Lady Fern | 370 |
| Atriplex littoralis | Grass-leaved Orache | 8 |
| Atriplex patula | Common Orache | 36 |
| Atriplex portulacoides | Sea Purslane | 39 |
| Atriplex prostrata sens.str. | Spear-leaved Orache | 16 |
| Atriplex sp. | an orache | 200 |
| Atropa belladonna | Deadly Nightshade | 12 |
| Avena fatua | Wild Oat | 2 |
| Top | ||
| Baldellia ranunculoides | Lesser Water-plantain | 18 |
| Ballota nigra | Black Horehound | 149 |
| Barbarea vulgaris | Winter-cress | 140 |
| Bellis perennis | Daisy | 1620 |
| Berberis vulgaris | Barberry | 2 |
| Berula erecta | Lesser Water-parsnip | 45 |
| Beta vulgaris ssp. maritima | Sea Beet | 76 |
| Betula pendula | Silver Birch | 681 |
| Betula pubescens | Downy Birch | 3 |
| Bidens cernua | Nodding Bur-marigold | 46 |
| Bidens tripartita | Trifid Bur-marigold | 81 |
| Blackstonia perfoliata | Yellow-wort | 96 |
| Blechnum spicant | Hard Fern | 224 |
| Bolboschoenus maritimus | Sea Club-rush | 99 |
| Borago officinalis | Borage | 2 |
| Brachypodium pinnatum | Tor-grass | 430 |
| Brachypodium sylvaticum | False-brome | 1500 |
| Brassica nigra | Black Mustard | 99 |
| Brassica oleracea var. oleracea | Wild Cabbage | 17 |
| Brassica rapa | Turnip | 40 |
| Brassica sp. | a cabbage | 3 |
| Briza media | Quaking-grass | 1001 |
| Briza minor | Lesser Quaking-grass | 12 |
| Bromopsis erecta | Upright Brome | 37 |
| Bromopsis ramosa | Hairy Brome | 305 |
| Bromus arvensis | Field Brome | 17 |
| Bromus commutatus | Meadow Brome | 1 |
| Bromus hordeaceus | Soft-brome | 954 |
| Bromus hordeaceus ssp. hordeaceus | a soft-brome | 1 |
| Bromus racemosus | Smooth Brome | 1 |
| Bromus secalinus | Rye Brome | 1 |
| Bryonia dioica | White Bryony | 244 |
| Butomus umbellatus | Flowering Rush | 21 |
| Buxus sempervirens | Box | 41 |
| Top | ||
| Cakile maritima | Sea Rocket | 6 |
| Calamagrostis epigejos | Wood Small-reed | 83 |
| Calendula officinalis | pot Marigold | 1 |
| Callitriche hamulata sens.lat. | Intermediate Water-starwort | 10 |
| Callitriche hermaphroditica | Annual Water-starwort | 9 |
| Callitriche obtusangula | Blue-fruited Water-starwort | 1 |
| Callitriche sp. | a water-starwort | 321 |
| Callitriche stagnalis sens.lat. | Common Water-starwort | 5 |
| Calluna vulgaris | Heather | 600 |
| Caltha palustris | Marsh Marigold | 250 |
| Calystegia sepium ssp. sepium | Great Bindweed | 699 |
| Calystegia soldanella | Sea Bindweed | 6 |
| Campanula glomerata | Clustered Bellflower | 94 |
| Campanula latifolia | Giant Bellflower | 4 |
| Campanula rotundifolia | Harebell | 557 |
| Campanula trachelium | Nettle-leaved Bellflower | 63 |
| Cannabis sativa | Hemp | 1 |
| Capsella bursa-pastoris | Shepherd’s-purse | 339 |
| Cardamine amara | Large Bitter-cress | 1 |
| Cardamine flexuosa | Wavy Bitter-cress | 119 |
| Cardamine hirsuta | Hairy Bitter-cress | 499 |
| Cardamine pratensis | Cuckoo-flower | 93 |
| Carduus crispus | Welted Thistle | 230 |
| Carduus crispus x nutans (C. x dubius) | a thistle | 2 |
| Carduus nutans | Musk Thistle | 329 |
| Carduus tenuiflorus | Slender Thistle | 83 |
| Carex acuta | Slender Tufted-sedge | 10 |
| Carex acutiformis | Lesser Pond-sedge | 147 |
| Carex arenaria | Sand Sedge | 32 |
| Carex binervis | Green-ribbed Sedge | 66 |
| Carex caryophyllea | Spring Sedge | 13 |
| Carex distans | Distant Sedge | 33 |
| Carex disticha | Brown Sedge | 10 |
| Carex divulsa | Grey Sedge | 41 |
| Carex echinata | Star Sedge | 158 |
| Carex extensa | Long-bracted Sedge | 25 |
| Carex filiformis | Downy-fruited Sedge | 1 |
| Carex flacca | Glaucous Sedge | 788 |
| Carex flava agg. | a sedge | 105 |
| Carex hirta | Hairy Sedge | 125 |
| Carex hostiana | Tawny Sedge | 4 |
| Carex humilis | Dwarf Sedge | 1 |
| Carex laevigata | Smooth-stalked Sedge | 44 |
| Carex limosa | Bog-sedge | 3 |
| Carex muricata ssp. lamprocarpa | Prickly Sedge | 27 |
| Carex nigra | Common Sedge | 117 |
| Carex otrubae | False Fox-sedge | 232 |
| Carex ovalis | Oval Sedge | 85 |
| Carex pallescens | Pale Sedge | 14 |
| Carex panicea | Carnation Sedge | 205 |
| Carex paniculata | Greater Tussock-sedge | 91 |
| Carex pendula | Pendulus Sedge | 395 |
| Carex pilulifera | Pill Sedge | 4 |
| Carex pseudocyperus | Cyperus Sedge | 4 |
| Carex pulicaris | Flea Sedge | 49 |
| Carex punctata | Dotted Sedge | 4 |
| Carex remota | Remote Sedge | 344 |
| Carex riparia | Great Pond-sedge | 18 |
| Carex rostrata | Bottle Sedge | 13 |
| Carex sp. | a sedge | 6 |
| Carex spicata | Spiked Sedge | 3 |
| Carex strigosa | Thin-spiked Wood-sedge | 2 |
| Carex sylvatica | Wood-sedge | 520 |
| Carex vesicaria | Bladder-sedge | 23 |
| Carex viridula ssp. oedocarpa | Common Yellow Sedge | 24 |
| Carlina vulgaris | Carline Thistle | 260 |
| Carpinus betulus | Hornbeam | 18 |
| Castanea sativa | Sweet Chestnut | 179 |
| Catabrosa aquatica | Whorl-grass | 27 |
| Catapodium marinum | Sea Fern-grass | 9 |
| Catapodium rigidum | Fern-grass | 64 |
| Centaurea cyanus | Cornflower | 2 |
| Centaurea nigra | Common Knapweed | 1602 |
| Centaurea scabiosa | Greater Knapweed | 360 |
| Centaurium erythraea | Common Centaury | 916 |
| Centaurium erythraea var. capitatum | Dumpy Centaury | 1 |
| Centaurium pulchellum | Lesser Centaury | 88 |
| Centaurium tenuiflorum | Slender Centaury | 1 |
| Centranthus ruber | Red Valerian | 42 |
| Cephalanthera damasonium | White Helleborine | 27 |
| Cerastium arvense | Field Mouse-ear | 1 |
| Cerastium diffusum | Dark-green Mouse-ear | 11 |
| Cerastium fontanum | Common Mouse-ear | 2516 |
| Cerastium fontanum ssp. vulgare | a common mouse-ear | 3 |
| Cerastium glomeratum | Sticky Mouse-ear | 210 |
| Cerastium semidecandrum | Little Mouse-ear | 11 |
| Ceratocapnos claviculata | Climbing Corydalis | 16 |
| Ceratodon purpureus ssp. purpureus | a moss | 1 |
| Ceterach officinarum | Rustyback | 60 |
| Chaenorhinum minus | Small Toadflax | 38 |
| Chaerophyllum temulum | Rough Chervil | 1064 |
| Chamaemelum nobile | Chamomile | 44 |
| Chamerion angustifolium | Rosebay Willowherb | 267 |
| Chara sp. | a stonewort | 6 |
| Chelidonium majus | Greater Celandine | 32 |
| Chenopodium album agg. | Fat Hen | 210 |
| Chenopodium bonus-henricus | Good King Henry | 3 |
| Chenopodium hybridum | Maple-leaved Goosefoot | 1 |
| Chenopodium murale | Nettle-leaved Goosefoot | 11 |
| Chenopodium polyspermum | Many-seeded Goosefoot | 9 |
| Chenopodium rubrum | Red Goosefoot | 7 |
| Chenopodium vulvaria | Stinking Goosefoot | 1 |
| Chrysanthemum segetum | Corn Marigold | 59 |
| Chrysosplenium alternifolium | Alternate-leaved Golden-saxifrage | 2 |
| Chrysosplenium oppositifolium | Opposite-leaved Golden-saxifrage | 123 |
| Cicendia filiformis | Yellow Centaury | 13 |
| Cichorium intybus | Chicory | 23 |
| Circaea lutetiana | Enchanter’s-nightshade | 886 |
| Cirsium acaule | Dwarf Thistle | 970 |
| Cirsium arvense | Creeping Thistle | 2249 |
| Cirsium arvense x palustre (C. x celakovskianum) | a thistle | 1 |
| Cirsium dissectum | Meadow Thistle | 297 |
| Cirsium eriophorum | Woolly Thistle | 25 |
| Cirsium palustre | Marsh Thistle | 2147 |
| Cirsium palustre * dissectum | 1 | |
| Cirsium vulgare | Spear Thistle | 1965 |
| Cladium mariscus | Great Fen-sedge | 2 |
| Cladonia sp. | a lichen | 3 |
| Clematis vitalba | Traveller’s Joy | 482 |
| Clinopodium acinos | Basil Thyme | 21 |
| Clinopodium ascendens | Common Calamint | 3 |
| Clinopodium vulgare | Wild Basil | 833 |
| Cochlearia anglica | English Scurvygrass | 14 |
| Cochlearia danica | Danish Scurvygrass | 6 |
| Coeloglossum viride | Frog Orchid | 9 |
| Colchium autumnale | Meadow Saffron | 3 |
| Coniferae sp. | a conifer (unidentified) | 633 |
| Conium maculatum | Hemlock | 255 |
| Conopodium majus | Pignut | 415 |
| Convallaria majalis | Lily of the Valley | 2 |
| Convolvulus arvensis | Field Bindweed | 738 |
| Cornus sanguinea | Dogwood | 1053 |
| Coronopus didymus | Lesser Swine-cress | 10 |
| Coronopus squamatus | Swine-cress | 31 |
| Corylus avellana | Hazel | 2276 |
| Cotoneaster horizontalis sens.str. | Wall Cotoneaster | 1 |
| Cotoneaster sp. | a cotoneaster | 2 |
| Crambe maritima | Sea-kale | 1 |
| Crassula tillaea | Mossy Stonecrop | 8 |
| Crataegus laevigata | Midland Hawthorn | 1 |
| Crataegus monogyna | Hawthorn | 2357 |
| Crepis capillaris | Smooth Hawk’s-beard | 1185 |
| Crepis vesicaria | Beaked Hawk’s-beard | 5 |
| Crithmum maritimum | Rock Samphire | 29 |
| Crocosmia x crocosmiiflora (C. aurea x pottsii) | Montbretia | 4 |
| Cruciata laevipes | Crosswort | 78 |
| Cuscuta epithymum | Dodder | 92 |
| Cymbalaria muralis | Ivy-leaved Toadflax | 145 |
| Cynodon dactylon | Bermuda-grass | 1 |
| Cynoglossum officinale | Hound’s-tongue | 74 |
| Cynosurus cristatus | Crested Dog’s-tail | 1621 |
| Cyperus longus | Galingale | 1 |
| Cytisus scoparius | Broom | 75 |
| Top | ||
| Dactylis glomerata | Cock’s-foot | 2568 |
| Dactylorhiza fuchsii | Common Spotted-orchid | 407 |
| Dactylorhiza fuchsii x incarnata (D. x (Soo) Soo | 1 | |
| Dactylorhiza fuchsii x praetermissa (D. x grandis) | a marsh-orchid | 6 |
| Dactylorhiza incarnata | Early Marsh-orchid | 23 |
| Dactylorhiza incarnata ssp. pulchella | Early Marsh Orchid | 4 |
| Dactylorhiza maculata ssp. ericetorum | Heath Spotted-orchid | 49 |
| Dactylorhiza maculata x praetermissa (D. x hallii) | a marsh-orchid | 2 |
| Dactylorhiza praetermissa | Southern Marsh-orchid | 35 |
| Dactylorhiza sp. | an orchid | 1 |
| Danthonia decumbens | Heath-grass | 542 |
| Daphne laureola | Spurge-laurel | 39 |
| Daucus carota | Wild Carrot | 529 |
| Deschampsia caespitosa | Tufted Hair-grass | 1180 |
| Deschampsia flexuosa | Wavy Hair-grass | 45 |
| Deschampsia setacea | Bog Hair-grass | 3 |
| Dianthus armeria | Deptford Pink | 2 |
| Dianthus barbatus | Sweet William | 1 |
| Dicranella heteromalla | a moss | 1 |
| Digitalis purpurea | Foxglove | 898 |
| Diplotaxis muralis | Annual Wall-rocket | 10 |
| Dipsacus fullonum | Wild Teasel | 491 |
| Dipsacus pilosus | Small Teasel | 2 |
| Drosera intermedia | Oblong-leaved Sundew | 242 |
| Drosera longifolia | Great Sundew | 10 |
| Drosera rotundifolia | Round-leaved Sundew | 280 |
| Dryopteris carthusiana | Narrow Buckler-fern | 9 |
| Dryopteris dilatata | Broad Buckler-fern | 698 |
| Dryopteris filix-mas agg. | Male Fern | 1550 |
| Top | ||
| Echium vulgare | Viper’s Bugloss | 94 |
| Elatine hexandra | Six-stamened Waterwort | 4 |
| Eleocharis multicaulis | Many-stalked Spike-rush | 105 |
| Eleocharis palustris | Common Spike-rush | 118 |
| Eleocharis parvula | Dwarf Spike-rush | 3 |
| Eleocharis quinqueflora | Few-flowered Spike-rush | 2 |
| Eleocharis uniglumis | Slender Spike-rush | 2 |
| Eleogiton fluitans | Floating Club-rush | 57 |
| Elodea canadensis | Canadian Waterweed | 43 |
| Elymus caninus | Bearded Couch | 49 |
| Elytrigia atherica | Sea Couch | 92 |
| Elytrigia juncea | Sand Couch | 16 |
| Elytrigia repens | Common Couch | 341 |
| Epilobium ciliatum | American Willowherb | 2 |
| Epilobium hirsutum | Great Willowherb | 788 |
| Epilobium lanceolatum | Spear-leaved Willowherb | 1 |
| Epilobium montanum | Broad-leaved Willowherb | 827 |
| Epilobium montanum x obscurum (E. x aggregatum) | a willowherb | 2 |
| Epilobium obscurum | Short-fruited Willowherb | 55 |
| Epilobium palustre | Marsh Willowherb | 169 |
| Epilobium parviflorum | Hoary Willowherb | 569 |
| Epilobium roseum | Pale Willowherb | 5 |
| Epilobium sp. | a willowherb | 13 |
| Epilobium tetragonum | Square-stalked Willowherb | 239 |
| Epipactis helleborine | Broad-leaved Helleborine | 42 |
| Epipactis palustris | Marsh Helleborine | 16 |
| Equisetum arvense | Field Horsetail | 111 |
| Equisetum fluviatile | Water Horsetail | 36 |
| Equisetum palustre | Marsh Horsetail | 57 |
| Equisetum sp. | a horsetail | 205 |
| Equisetum sylvaticum | Wood Horsetail | 3 |
| Equisetum telmateia | Great Horsetail | 258 |
| Erica ciliaris | Dorset Heath | 83 |
| Erica ciliaris x tetralix (E. x watsonii) | a heath | 9 |
| Erica cinerea | Bell Heather | 605 |
| Erica lusitanica | Portuguese Heath | 1 |
| Erica tetralix | Cross-leaved Heath | 644 |
| Erigeron acer | Blue Fleabane | 15 |
| Eriophorum angustifolium | Common Cottongrass | 235 |
| Eriophorum gracile | Slender Cottongrass | 1 |
| Eriophorum latifolium | Broad-leaved Cottongrass | 23 |
| Erodium cicutarium agg | Common Stork’s-bill | 58 |
| Erodium maritimum | Sea Stork’s-bill | 12 |
| Erodium moschatum | Musk Stork’s-bill | 1 |
| Erophila verna sens. lat. | Common Whitlowgrass | 121 |
| Eryngium maritimum | Sea Holly | 8 |
| Erysimum cheiri | Wallflower | 7 |
| Eschscholzia californica | Californian Poppy | 1 |
| Euonymus europaeus | Spindle | 474 |
| Eupatorium cannabinum | Hemp-agrimony | 487 |
| Euphorbia amygdaloides | Wood Spurge | 494 |
| Euphorbia exigua | Dwarf Spurge | 83 |
| Euphorbia helioscopia | Sun Spurge | 60 |
| Euphorbia paralias | Sea Spurge | 2 |
| Euphorbia peplus | Petty Spurge | 11 |
| Euphorbia portlandica | Portland Spurge | 34 |
| Euphrasia anglica | an eyebright | 8 |
| Euphrasia nemorosa | an eyebright | 145 |
| Euphrasia sp. | A Eyebright | 730 |
| Euphrasia tetraquetra | Eyebright | 1 |
| Evernia prunastri | a lichen | 1 |
| Top | ||
| Fagus sylvatica | Beech | 522 |
| Fallopia convolvulus | Black Bindweed | 212 |
| Fallopia dumetorum | Copse-bindweed | 1 |
| Fallopia japonica | Japanese Knotweed | 3 |
| Festuca arundinacea | Tall Fescue | 691 |
| Festuca filiformis | Fine-leaved Sheep’s-fescue | 1 |
| Festuca gigantea | Giant Fescue | 293 |
| Festuca ovina agg. | Sheep’s Fescue [agg.] | 814 |
| Festuca pratensis | Meadow Fescue | 1 |
| Festuca rubra agg. | Red Fescue | 244 |
| Festuca sp. | a fescue | 490 |
| Filago minima | Small Cudweed | 42 |
| Filago pyramidata | Broad-leaved Cudweed | 1 |
| Filago vulgaris | Common Cudweed | 49 |
| Filipendula ulmaria | Meadowsweet | 1349 |
| Filipendula vulgaris | Dropwort | 69 |
| Foeniculum vulgare | Fennel | 12 |
| Fragaria moschata | Hautbois Strawberry | 1 |
| Fragaria vesca | Wild Strawberry | 1336 |
| Frangula alnus | Alder Buckthorn | 123 |
| Fraxinus excelsior | Ash | 2117 |
| Fumaria capreolata | White Ramping-fumitory | 1 |
| Fumaria densiflora | Dense-flowered Fumitory | 1 |
| Fumaria muralis ssp. boraei | Few-flowered Fumitory | 3 |
| Fumaria officinalis | Common Fumitory | 41 |
| Top | ||
| Gagea lutea | Yellow Star-of-Bethlehem | 1 |
| Galeopsis angustifolia | Red Hemp-nettle | 13 |
| Galeopsis tetrahit sens.str. | Common Hemp-nettle | 317 |
| Galium aparine | Cleavers | 2293 |
| Galium mollugo | Hedge Bedstraw | 1184 |
| Galium odoratum | Woodruff | 217 |
| Galium palustre | Common Marsh-bedstraw | 865 |
| Galium saxatile | Heath Bedstraw | 327 |
| Galium tricornutum | Corn Cleavers | 2 |
| Galium uliginosum | Fen Bedstraw | 158 |
| Galium verum | Lady’s Bedstraw | 1081 |
| Gastridium ventricosum | Nit-grass | 1 |
| Gaultheria shallon | Shallon | 1 |
| Genista anglica | Petty Whin | 42 |
| Genista tinctoria | Dyer’s Greenweed | 161 |
| Gentiana pneumonanthe | Marsh Gentian | 49 |
| Gentianella amarella | Autumn Gentian | 73 |
| Gentianella campestris | Field Gentian | 2 |
| Geranium columbinum | Long-stalked Crane’s-bill | 47 |
| Geranium dissectum | Cut-leaved Crane’s-bill | 357 |
| Geranium lucidum | Shining Crane’s-bill | 47 |
| Geranium molle | Dove’s-foot Crane’s-bill | 217 |
| Geranium pratense | Meadow Crane’s-bill | 6 |
| Geranium pusillum | Small-flowered Crane’s-bill | 8 |
| Geranium pyrenaicum | Hedgerow Crane’s-bill | 4 |
| Geranium robertianum | Herb-robert | 1801 |
| geranium rotundifolium | 1 | |
| Geum rivale | Water Avens | 28 |
| Geum rivale x urbanum (G. x intermedium) | Hybrid Avens | 1 |
| Geum urbanum | Herb Bennet | 1635 |
| Glaucium flavum | Yellow Horned Poppy | 20 |
| Glaux maritima | Sea-milkwort | 100 |
| Glechoma hederacea | Ground-ivy | 1757 |
| Glyceria declinata | Small Sweet-grass | 4 |
| Glyceria fluitans | Floating Sweet-grass | 318 |
| Glyceria maxima | Reed Sweet-grass | 47 |
| Glyceria notata | Plicate Sweet-grass | 15 |
| Gnaphalium sylvaticum | Heath Cudweed | 1 |
| Gnaphalium uliginosum | Marsh Cudweed | 379 |
| Groenlandia densa | Opposite-leaved Pondweed | 21 |
| Gymnadenia conopsea | Fragrant Orchid | 10 |
| Top | ||
| Hammarbya paludosa | Bog Orchid | 1 |
| Hedera helix | Ivy | 2580 |
| Helianthemum nummularium | Common Rock-rose | 234 |
| Helianthus tuberosus | Jerusalem Artichoke | 2 |
| Helictotrichon pratense | Meadow Oat-grass | 400 |
| Helleborus foetidus | Stinking Hellebore | 2 |
| Helleborus viridis | Green Hellebore | 2 |
| Heracleum sphondylium | Hogweed | 1778 |
| Hieracium borreri | a hawkeed | 6 |
| Hieracium candelabrae | a hawkweed | 1 |
| Hieracium sabaudum | a hawkweed | 33 |
| Hieracium sect. Sabauda | a hawkweed | 1 |
| Hieracium sp. | a hawkweed | 4 |
| Hieracium trichocaulon | a hawkweed | 2 |
| Hieracium umbellatum | a hawkweed | 42 |
| Himantoglossum hircinum | Lizard Orchid | 1 |
| Hippocrepis comosa | Horseshoe Vetch | 103 |
| Hippophae rhamnoides | Sea-buckthorn | 1 |
| Hippuris vulgaris | Mare’s-tail | 4 |
| Holcus lanatus | Yorkshire-fog | 3984 |
| Holcus mollis | Creeping Soft-grass | 589 |
| Honckenya peploides | Sea Sandwort | 7 |
| Hordeum murinum | Wall Barley | 28 |
| Hordeum secalinum | Meadow Barley | 170 |
| Humulus lupulus | Hop | 112 |
| Hyacinthoides non-scripta | Bluebell | 1340 |
| Hydrocotyle vulgaris | Marsh Pennywort | 468 |
| Hyoscyamus niger | Henbane | 11 |
| Hypericum androsaemum | Tutsan | 225 |
| Hypericum androsaemum x hircinum (H. x inodorum) | Tall Tutsan | 1 |
| Hypericum calycinum | Rose-of-Sharon | 3 |
| Hypericum elodes | Marsh St. John’s-wort | 120 |
| Hypericum hirsutum | Hairy St. John’s-wort | 656 |
| Hypericum humifusum | Trailing St. John’s-wort | 190 |
| Hypericum maculatum | Imperforate St. John’s-wort | 3 |
| Hypericum montanum | Pale St. John’s-wort | 6 |
| Hypericum perforatum | Perforate St. John’s-wort | 520 |
| Hypericum pulchrum | Slender St. John’s-wort | 497 |
| Hypericum tetrapterum | Square-stalked St. John’s-wort | 651 |
| Hypnum cupressiforme sens. lat. | a moss | 1 |
| Hypnum jutlandicum | a moss | 1 |
| Hypochaeris glabra | Smooth Cat’s-ear | 12 |
| Hypochaeris radicata | Cat’s-ear | 1327 |
| Hypogymnia physodes | a lichen | 1 |
| Top | ||
| Ilex aquifolium | Holly | 1085 |
| Impatiens capensis | Orange Balsam | 13 |
| Impatiens glandulifera | Indian Balsam | 1 |
| Inula conyzae | Ploughman’s-spikenard | 72 |
| Inula crithmoides | Golden-samphire | 4 |
| Inula helenium | Elecampane | 4 |
| Iris foetidissima | Stinking Iris | 677 |
| Iris pseudacorus | Yellow Iris | 355 |
| Isoetes echinospora | Spring Quillwort | 3 |
| Isolepis cernua | Slender Club-rush | 6 |
| Isolepis setacea | Bristle Club-rush | 60 |
| Top | ||
| Jasione montana | Sheep’s-bit | 68 |
| Juglans regia | Walnut | 4 |
| Juncus acutiflorus | Sharp-flowered Rush | 1152 |
| Juncus articulatus | Jointed Rush | 292 |
| Juncus bufonius sens.str. | Toad Rush | 531 |
| Juncus bulbosus | Bulbous Rush | 291 |
| Juncus conglomeratus | Compact Rush | 736 |
| Juncus effusus | Soft Rush | 1313 |
| Juncus gerardii | Saltmarsh Rush | 110 |
| Juncus inflexus | Hard Rush | 851 |
| Juncus maritimus | Sea Rush | 113 |
| Juncus squarrosus | Heath Rush | 128 |
| Juncus subnodulosus | Blunt-flowered Rush | 49 |
| Juncus tenuis | Slender Rush | 3 |
| Juniperus communis | Juniper | 8 |
| Top | ||
| Kickxia elatine | Sharp-leaved Fluellen | 63 |
| Kickxia spuria | Round-leaved Fluellen | 38 |
| Knautia arvensis | Field Scabious | 415 |
| Koeleria macrantha | Crested Hair-grass | 271 |
| Top | ||
| Laburnum anagyroides | Laburnum | 3 |
| Lactuca virosa | Greater Lettuce | 5 |
| Lamiastrum galeobdolon | Yellow Archangel | 646 |
| Lamium album | White Dead-nettle | 219 |
| Lamium amplexicaule | Hen-bit Dead-nettle | 11 |
| Lamium maculatum | Spotted Dead-nettle | 1 |
| Lamium purpureum | Red Dead-nettle | 197 |
| Lapsana communis | Nipplewort | 1144 |
| Larix sp. | a larch | 5 |
| Lathraea squamaria | Toothwort | 6 |
| Lathyrus aphaca | Yellow Vetchling | 7 |
| Lathyrus japonicus | Sea Pea | 7 |
| Lathyrus linifolius | Bitter-vetch | 39 |
| Lathyrus nissolia | Grass Vetchling | 1 |
| Lathyrus pratensis | Meadow Vetchling | 1116 |
| Lathyrus sylvestris | Narrow-leaved Everlasting-pea | 5 |
| Lathyrus tuberosus | Tuberous Pea | 12 |
| Lavatera arborea | Tree-mallow | 2 |
| Legousia hybrida | Venus’s-looking-glass | 29 |
| Lemna minor | Common Duckweed | 133 |
| Lemna trisulca | Ivy-leaved Duckweed | 13 |
| Leontodon autumnalis | Autumnal Hawkbit | 828 |
| Leontodon hispidus | Rough Hawkbit | 938 |
| Leontodon saxatilis | Lesser Hawkbit | 1343 |
| Lepidium campestre | Field Pepperwort | 4 |
| Lepidium draba | Hoary Cress | 3 |
| Lepidium heterophyllum | Smith’s Pepperwort | 10 |
| Leucanthemum vulgare | Oxeye Daisy | 842 |
| Leucanthemum x superbum (L. lacustre x maximum) | Shasta Daisy | 4 |
| Leucobryum glaucum | a moss | 1 |
| Leucojum aestivum | Summer Snowflake | 2 |
| Ligustrum vulgare | Wild Privet | 1320 |
| Limonium auriculaefolia | Rock Sea-lavender | 1 |
| Limonium binervosum agg. | Rock Sea-Lavender [agg.] | 2 |
| Limonium vulgare | Common Sea-lavender | 48 |
| Linaria vulgaris | Common Toadflax | 170 |
| Linum bienne | Pale Flax | 37 |
| Linum catharticum | Fairy Flax | 757 |
| Listera ovata | Common Twayblade | 411 |
| Lithospermum arvense | Field Gromwell | 4 |
| Lithospermum officinale | Common Gromwell | 62 |
| Littorella uniflora | Shoreweed | 11 |
| Lobaria pulmonaria | Lungwort | 1 |
| Lobelia urens | Heath Lobelia | 2 |
| Lolium multiflorum | Italian Rye-grass | 2 |
| Lolium perenne | Perennial Rye-grass | 1193 |
| Lonicera caprifolium | Perfoliate Honeysuckle | 1 |
| Lonicera periclymenum | Honeysuckle | 1876 |
| Lotus corniculatus | Common Bird’s-foot-trefoil | 2072 |
| Lotus glaber | Narrow-leaved Bird’s-foot-trefoil | 17 |
| Lotus pedunculatus | Large Bird’s-foot-trefoil | 1111 |
| Lotus sp. | a bird’s-foot-trefoil | 2 |
| Lotus subbiflorus | Hairy Bird’s-foot-trefoil | 7 |
| Luzula campestris | Field Wood-rush | 200 |
| Luzula forsteri | Southern Wood-rush | 2 |
| Luzula multiflora | Heath Wood-rush | 8 |
| Luzula multiflora ssp. congesta | a heath wood-rush | 210 |
| Luzula pilosa | Hairy Wood-rush | 264 |
| Luzula sp. | A Wood-rush | 18 |
| Luzula sylvatica | Great Wood-rush | 52 |
| Lychnis flos-cuculi | Ragged Robin | 428 |
| Lycium barbarum | Duke of Argyll’s Teaplant | 6 |
| Lycopersicon esculentum | Tomato | 3 |
| Lycopodiella inundata | Marsh Clubmoss | 49 |
| Lycopus europaeus | Gipsywort | 232 |
| Lysimachia nemorum | Yellow Pimpernel | 404 |
| Lysimachia nummularia | Creeping-Jenny | 93 |
| Lysimachia punctata | Dotted Loosestrife | 1 |
| Lysimachia vulgaris | Yellow Loosestrife | 148 |
| Lythrum portula | Water Purslane | 141 |
| Lythrum salicaria | Purple-loosestrife | 372 |
| Top | ||
| Mahonia aquifolium | Oregon Grape | 4 |
| Malus domestica | Apple | 120 |
| Malva moschata | Musk-mallow | 104 |
| Malva neglecta | Dwarf Mallow | 7 |
| Malva pusilla | Small Mallow | 2 |
| Malva sylvestris | Common Mallow | 130 |
| Marchantia polymorpha sens. lat. | a liverwort | 2 |
| Marrubium vulgare | White Horehound | 6 |
| Matricaria discoidea | Pineapple Weed | 410 |
| Matricaria recutita | Scented Mayweed | 19 |
| Medicago arabica | Spotted Medick | 16 |
| Medicago lupulina | Black Medick | 1027 |
| Medicago polymorpha | Toothed Medick | 7 |
| Medicago sativa ssp. sativa | Lucerne | 12 |
| Melampyrum pratense | Common Cow-wheat | 109 |
| Melampyrum sylvaticum | Small Cow-wheat | 1 |
| Melica uniflora | Wood Melick | 133 |
| Melilotus altissimus | Tall Melilot | 54 |
| Melilotus officinalis | Ribbed Melilot | 4 |
| Mentha aquatica | Water Mint | 838 |
| Mentha aquatica x arvensis (M. x verti L. | 1 | |
| Mentha aquatica x spicata (M. x piperita) | Peppermint | 3 |
| Mentha arvensis | Corn Mint | 424 |
| Mentha longifolia x suaveolens (M. x r (L.) Hudson | 1 | |
| Mentha spicata | Spear Mint | 5 |
| Mentha spicata x suaveolens (M. x villosa) | Apple-mint | 1 |
| Mentha x smithiana (M. aquatica x arvensis x spicata) | Tall Mint | 2 |
| Menyanthes trifoliata | Bogbean | 76 |
| Mercurialis annua | Annual Mercury | 12 |
| Mercurialis perennis | Dog’s Mercury | 1641 |
| Milium effusum | Wood Millet | 77 |
| Mimulus guttatus | Monkeyflower | 12 |
| Mimulus luteus | Blood-drop Emlets | 5 |
| Mimulus moschatus | Musk | 1 |
| Misopates orontium | Weasel’s-snout | 21 |
| Moehringia trinervia | Three-nerved Sandwort | 688 |
| Moenchia erecta | Upright Chickweed | 1 |
| Molinia caerulea | Purple Moor-grass | 762 |
| Monotropa hypopitys | Yellow Bird’s-nest | 10 |
| Montia fontana | Blinks | 17 |
| Mycelis muralis | Wall Lettuce | 24 |
| Myosotis arvensis | Field Forget-me-not | 1255 |
| Myosotis discolor | Changing Forget-me-not | 10 |
| Myosotis laxa | Tufted Forget-me-not | 236 |
| Myosotis ramosissima | Early Forget-me-not | 27 |
| Myosotis scorpioides | Water Forget-me-not | 244 |
| Myosotis secunda | Creeping Forget-me-not | 8 |
| Myosoton aquaticum | Water Chickweed | 163 |
| Myrica gale | Bog Myrtle | 198 |
| Myriophyllum alterniflorum | Alternate Water-milfoil | 6 |
| Myriophyllum sp. | a water-milfoil | 9 |
| Myriophyllum spicatum | Spiked Water-milfoil | 13 |
| Top | ||
| Narcissus pseudonarcissus ssp. pseudonarcissus | Wild Daffodil | 6 |
| Nardus stricta | Mat-grass | 51 |
| Narthecium ossifragum | Bog Asphodel | 216 |
| Nasturtium officinale agg. | Water-cress Spp | 217 |
| Neottia nidus-avis | Bird’s-nest Orchid | 25 |
| Nepeta cataria | Cat-mint | 5 |
| Nuphar lutea | Yellow Water-lily | 95 |
| Nymphaea alba | White Water-lily | 18 |
| Top | ||
| Odontites vernus | Red Bartsia | 619 |
| Oenanthe aquatica | Fine-leaved Water-dropwort | 31 |
| Oenanthe crocata | Hemlock Water-dropwort | 673 |
| Oenanthe fistulosa | Tubular Water-dropwort | 23 |
| Oenanthe lachenalii | Parsley Water-dropwort | 65 |
| Oenanthe pimpinelloides | Corky-fruited Water-dropwort | 517 |
| Oenanthe silaifolia | Narrow-leaved Water-dropwort | 3 |
| Oenanthe sp. | a water-dropwort | 1 |
| Oenother lamarckiana | 1 | |
| Oenothera biennis | Common Evening-primrose | 4 |
| Omphalodes verna | Blue-eyed Mary | 1 |
| Onobrychis viciifolia | Sainfoin | 19 |
| Ononis repens | Common Restharrow | 293 |
| Ononis spinosa | Spiny Restharrow | 41 |
| Onopordon acanthium | 1 | |
| Ophioglossum vulgatum | Adder’s-tongue | 12 |
| Ophrys apifera | Bee Orchid | 45 |
| Ophrys aranifera | 1 | |
| Orchis mascula | Early-purple Orchid | 130 |
| Orchis morio | Green-winged Orchid | 1 |
| Origanum vulgare | Wild Marjoram | 130 |
| Ornithogalum angustifolium | Star-of-Bethlehem | 2 |
| Ornithopus perpusillus | Bird’s-foot | 46 |
| Orobanche elatior | Knapweed Broomrape | 9 |
| Orobanche hederae | Ivy Broomrape | 5 |
| Orobanche minor | Common Broomrape | 35 |
| Orobanche rapum-genistae | Greater Broomrape | 7 |
| Osmunda regalis | Royal Fern | 47 |
| Oxalis acetosella | Wood-sorrel | 332 |
| Oxalis corniculata | Procumbent Yellow-sorrel | 4 |
| Top | ||
| Papaver argemone | Prickly Poppy | 4 |
| Papaver dubium | Long-headed Poppy | 6 |
| Papaver hybridum | Rough Poppy | 15 |
| Papaver rhoeas | Common Poppy | 408 |
| Papaver somniferum | Opium Poppy | 11 |
| Papaver sp. | a poppy | 2 |
| Parapholis incurva | Curved Hard Grass | 1 |
| Parapholis strigosa | Hard Grass | 8 |
| Parentucellia viscosa | Yellow Bartsia | 7 |
| Parietaria judaica | Pellitory-of-the-Wall | 41 |
| Paris quadrifolia | Herb Paris | 28 |
| Pastinaca sativa | Wild Parsnip | 465 |
| Pedicularis palustris | Marsh Lousewort | 39 |
| Pedicularis sylvatica | Lousewort | 209 |
| Pellia sp. | a liverwort | 1 |
| Persicaria amphibia | Amphibious Bistort | 66 |
| Persicaria bistorta | Common Bistort | 3 |
| Persicaria hydropiper | Water-pepper | 569 |
| Persicaria lapathifolia | Pale Persicaria | 12 |
| Persicaria laxiflora | Tasteless Water-pepper | 2 |
| Persicaria maculosa | Redshank | 397 |
| Persicaria minor | Small Water-pepper | 3 |
| Petasites fragrans | Winter Heliotrope | 3 |
| Petasites hybridus | Butterbur | 48 |
| Petroselinum segetum | Corn Parsley | 14 |
| Phalaris arundinacea | Reed Canary-grass | 269 |
| Phalaris canariensis | 2 | |
| Philadelphus coronarius | Mock Orange | 5 |
| Phleum pratense sens.lat. | Timothy | 1274 |
| Phragmites australis | Common Reed | 262 |
| Phyllitis scolopendrium | Hart’s-tongue | 1210 |
| Picris echioides | Bristly Oxtongue | 269 |
| Picris hieracioides | Hawkweed Oxtongue | 72 |
| Pilosella officinarum | Mouse-ear-hawkweed | 726 |
| Pilularia globulifera | Pillwort | 4 |
| Pimpinella saxifraga | Burnet-saxifrage | 578 |
| Pinguicula lusitanica | Pale Butterwort | 32 |
| Pinus sp. | a pine | 27 |
| Pinus sylvestris | Scots Pine | 29 |
| Plagiochila asplenioides sens. lat. | a liverwort | 1 |
| Plantago coronopus | Buck’s-horn Plantain | 227 |
| Plantago lanceolata | Ribwort Plantain | 2820 |
| Plantago major | Greater Plantain | 1643 |
| Plantago maritima | Sea Plantain | 67 |
| Plantago media | Hoary Plantain | 596 |
| Platanthera bifolia | Lesser Butterfly-orchid | 5 |
| Platanthera chlorantha | Greater Butterfly-orchid | 63 |
| Platanus x hispanica (P. occidentalis x orientalis) | London Plane | 2 |
| Poa annua | Annual Meadow-grass | 436 |
| Poa nemoralis | 1 | |
| Poa pratensis sens.lat. | Smooth Meadow-grass | 1477 |
| Poa sp. | a meadow-grass | 129 |
| Poa trivialis | Rough Meadow-grass | 202 |
| Polygala serpyllifolia | Heath Milkwort | 150 |
| Polygala vulgaris | Common Milkwort | 411 |
| Polygonatum odoratum | Angular Solomon’s-seal | 1 |
| Polygonum aviculare sens.str. | Knotgrass | 562 |
| Polygonum oxyspermum | Ray’s Knotgrass | 2 |
| Polygonum sp. | a knotgrass | 1 |
| Polypodium vulgare agg. | Polypody | 705 |
| Polypogon monspeliensis | Annual Beard-grass | 2 |
| Polystichum aculeatum | Hard Shield-fern | 873 |
| Polytrichum juniperinum | a hair-moss | 1 |
| Polytrichum sp. | a hair-moss | 6 |
| Populus alba | White Poplar | 38 |
| Populus alba x tremula (P. x canescens) | Grey Poplar | 4 |
| Populus balsamifera | Eastern Balsam-poplar | 1 |
| Populus nigra | a poplar | 22 |
| Populus sp. | a poplar | 12 |
| Populus tremula | Aspen | 79 |
| Populus x canadensis (P. deltoides x nigra) | Hybrid Black Poplar | 1 |
| Potamogeton alpinus | Red Pondweed | 1 |
| Potamogeton crispus | Curled Pondweed | 14 |
| Potamogeton lucens | Shining Pondweed | 17 |
| Potamogeton natans | Broad-leaved Pondweed | 53 |
| Potamogeton pectinatus | Fennel Pondweed | 20 |
| Potamogeton perfoliatus | Perfoliate Pondweed | 3 |
| Potamogeton polygonifolius | Bog Pondweed | 151 |
| Potamogeton pusillus | Lesser Pondweed | 9 |
| Potamogeton sp. | a pondweed | 5 |
| Potentilla anglica | Trailing Tormentil | 93 |
| Potentilla anserina | Silverweed | 1663 |
| Potentilla argentea | Hoary Cinquefoil | 2 |
| Potentilla erecta | Tormentil | 1482 |
| Potentilla palustris | Marsh Cinquefoil | 39 |
| Potentilla reptans | Creeping Cinquefoil | 1401 |
| Potentilla sterilis | Barren Strawberry | 646 |
| Preissia quadrata | a liverwort | 1 |
| Primula veris | Cowslip | 537 |
| Primula veris x vulgaris (P. x polyantha) | False Oxlip | 11 |
| Primula vulgaris | Primrose | 1812 |
| Prunella vulgaris | Selfheal | 3066 |
| Prunus avium | Wild Cherry | 20 |
| Prunus cerasus | Dwarf Cherry | 16 |
| Prunus domestica | Wild Plum | 6 |
| Prunus domestica ssp. insititia | Damson | 5 |
| Prunus laurocerasus | Cherry Laurel | 1 |
| Prunus spinosa | Blackthorn | 1796 |
| Pseudofumaria lutea | Yellow Corydalis | 15 |
| Pteridium aquilinum | Bracken | 2088 |
| Puccinellia distans | Reflexed Saltmarsh-grass | 26 |
| Puccinellia maritima | Common Saltmarsh-grass | 25 |
| Puccinellia rupestris | Stiff Saltmarsh-grass | 3 |
| Pulicaria dysenterica | Common Fleabane | 1192 |
| Pulicaria vulgaris | Small Fleabane | 2 |
| Pulmonaria longifolia | Narrow-leaved Lungwort | 17 |
| Pyrus communis sens. str. | Pear | 3 |
| Top | ||
| Quercus cerris | Turkey Oak | 2 |
| Quercus ilex | Evergreen Oak | 3 |
| Quercus robur | Pedunculate Oak | 2106 |
| Quercus sp. | an oak | 1 |
| Top | ||
| Radiola linoides | Allseed | 105 |
| Ranunculus acris | Meadow Buttercup | 1444 |
| Ranunculus aquatilis | Common Water-crowfoot | 64 |
| Ranunculus arvensis | Corn Buttercup | 3 |
| Ranunculus auricomus | Goldilocks Buttercup | 38 |
| Ranunculus baudotii | Brackish Water-crowfoot | 2 |
| Ranunculus bulbosus | Bulbous Buttercup | 121 |
| Ranunculus circinatus | Fan-leaved Water-crowfoot | 2 |
| Ranunculus ficaria | Lesser Celandine | 490 |
| Ranunculus flammula | Lesser Spearwort | 539 |
| Ranunculus fluitans | River Water-crowfoot | 36 |
| Ranunculus hederaceus | Ivy-leaved Crowfoot | 51 |
| Ranunculus lingua | Greater Spearwort | 2 |
| Ranunculus parviflorus | Small-flowered Buttercup | 8 |
| Ranunculus peltatus | Pond Water-crowfoot | 2 |
| Ranunculus repens | Creeping Buttercup | 2983 |
| Ranunculus sardous | Hairy Buttercup | 2 |
| Ranunculus sceleratus | Celery-leaved Buttercup | 22 |
| Ranunculus sp. | a buttercup | 2 |
| Ranunculus trichophyllus | Thread-leaved Water-crowfoot | 5 |
| Raphanus raphanistrum | Wild Radish | 17 |
| Raphanus sativus | Garden Radish | 1 |
| Reseda lutea | Wild Mignonette | 49 |
| Reseda luteola | Weld | 47 |
| Rhamnus cathartica | Buckthorn | 178 |
| Rhinanthus minor | Yellow-rattle | 203 |
| Rhododendron ponticum | Rhododendron | 108 |
| Rhynchospora alba | White Beak-sedge | 173 |
| Rhynchospora fusca | Brown Beak-sedge | 28 |
| Rhytidiadelphus triquetrus | a moss | 1 |
| Ribes nigrum | Black Currant | 18 |
| Ribes rubrum | Red Currant | 326 |
| Ribes uva-crispa | Gooseberry | 87 |
| Robinia pseudoacacia | False Acacia | 2 |
| Rorippa palustris | Marsh Yellow-cress | 35 |
| Rorippa sylvestris | Creeping Yellow-cress | 1 |
| Rosa arvensis | Field Rose | 689 |
| Rosa canina agg. | Dog Rose | 1321 |
| Rosa micrantha | Small-flowered Sweet-briar | 4 |
| Rosa pimpinellifolia | Burnet Rose | 25 |
| Rosa rubiginosa agg. | Sweet-briar | 62 |
| Rosa sp. | a rose (unidentified) | 325 |
| Rosa stylosa | Short-styled Field-rose | 6 |
| Rosa tomentosa | Harshy Downy-rose | 26 |
| Rubia peregrina | Wild Madder | 28 |
| Rubus caesius | Dewberry | 411 |
| Rubus fruticosus agg. | Bramble | 3733 |
| Rubus idaeus | Raspberry | 283 |
| Rubus plicatus | a bramble | 1 |
| Rumex acetosa | Common Sorrel | 1067 |
| Rumex acetosella | Sheep’s Sorrel [agg.] | 487 |
| Rumex conglomeratus | Clustered Dock | 569 |
| Rumex crispus | Curled Dock | 1292 |
| Rumex hydrolapathum | Water Dock | 55 |
| Rumex maritima | 1 | |
| Rumex obtusifolius | Broad-leaved Dock | 649 |
| Rumex pulcher | Fiddle Dock | 14 |
| Rumex sanguineus | Wood Dock | 1794 |
| Rumex sp. | a dock | 3 |
| Ruppia maritima | Beaked Tasselweed | 5 |
| Ruscus aculeatus | Butcher’s-broom | 67 |
| Top | ||
| Sagina apetala | Annual Pearlwort | 37 |
| Sagina apetala ssp. apetala | Annual Pearlwort | 15 |
| Sagina apetala ssp. erecta | Fringed Pearlwort | 2 |
| Sagina maritima | Sea Pearlwort | 3 |
| Sagina nodosa | Knotted Pearlwort | 10 |
| Sagina procumbens | Procumbent Pearlwort | 602 |
| Sagina subulata | Heath Pearlwort | 20 |
| Sagittaria sagittifolia | Arrowhead | 66 |
| Salicornia dolichostachya | Long-spiked Glasswort | 19 |
| Salicornia procumbens agg. | a glasswort | 1 |
| Salicornia ramosissima | Purple Glasswort | 26 |
| Salicornia sp. | a glasswort | 22 |
| Salix alba | White Willow | 5 |
| Salix aurita | Eared Willow | 20 |
| Salix caprea | Goat Willow | 124 |
| Salix cinerea | Grey Willow | 1453 |
| Salix repens | Creeping Willow | 223 |
| Salix sp. | a sallow | 163 |
| Salix viminalis | Osier | 1 |
| Salsola kali | Saltwort | 7 |
| Salvia verbenaca | Wild Clary | 32 |
| Sambucus ebulus | Dwarf Elder | 1 |
| Sambucus nigra | Elder | 1884 |
| Samolus valerandi | Brookweed | 72 |
| Sanguisorba minor | Salad Burnet | 591 |
| Sanguisorba officinalis | Great Burnet | 12 |
| Sanicula europaea | Sanicle | 312 |
| Saponaria officinalis | Soapwort | 2 |
| Sarcocornia perennis | Perennial Glasswort | 12 |
| Saxifraga tridactylites | Rue-leaved Saxifrage | 84 |
| Scabiosa columbaria | Small Scabious | 368 |
| Scandix pecten-veneris | Shepherd’s-needle | 26 |
| Schoenoplectus lacustris | Common Club-rush | 77 |
| Schoenoplectus tabernaemontani | Grey Club-rush | 37 |
| Schoenus nigricans | Black Bog-rush | 67 |
| Scirpus sylvaticus | Wood Club-rush | 16 |
| Scleranthus annuus | Annual Knawel | 46 |
| Scorzonera humilis | Viper’s-grass | 1 |
| Scrophularia auriculata | Water Figwort | 891 |
| Scrophularia nodosa | Common Figwort | 810 |
| Scutellaria galericulata | Skullcap | 98 |
| Scutellaria minor | Lesser Skullcap | 238 |
| Sedum acre | Biting Stonecrop | 139 |
| Sedum album | White Stonecrop | 14 |
| Sedum anglicum | English Stonecrop | 35 |
| Sedum dasyphyllum | Thick-leaved Stonecrop | 2 |
| Sedum rupestre | Reflexed Stonecrop | 13 |
| Sedum telephium | Orpine | 9 |
| Sempervivum tectorum | House-leek | 1 |
| Senecio aquaticus | Marsh Ragwort | 373 |
| Senecio erucifolius | Hoary Ragwort | 268 |
| Senecio jacobaea | Common Ragwort | 1489 |
| Senecio squalidus | 1 | |
| Senecio sylvaticus | Heath Groundsel | 130 |
| Senecio vulgaris | Groundsel | 449 |
| Seriphidium maritimum | Sea Wormwood | 3 |
| Serratula tinctoria | Saw-wort | 275 |
| Sherardia arvensis | Field Madder | 143 |
| Silaum silaus | Pepper-saxifrage | 305 |
| Silene dioica | Red Campion | 2019 |
| Silene gallica | Small-flowered Catchfly | 61 |
| Silene latifolia | White Campion | 274 |
| Silene uniflora | Sea Campion | 67 |
| Silene vulgaris | Bladder Campion | 300 |
| Silybum marianum | Milk Thistle | 4 |
| Sinapis alba | White Mustard | 6 |
| Sinapis arvensis | Charlock | 114 |
| Sison amomum | Stone Parsley | 198 |
| Sisymbrium officinale | Hedge Mustard | 117 |
| Smyrnium olusatrum | Alexanders | 11 |
| Solanum dulcamara | Bittersweet | 997 |
| Solanum nigrum | Black Nightshade | 29 |
| Soleirolia soleirolii | Mind-your-own-business | 2 |
| Solidago virgaurea | Goldenrod | 92 |
| Sonchus arvensis | Perennial Sow-thistle | 265 |
| Sonchus asper | Prickly Sow-thistle | 257 |
| Sonchus oleraceus | Smooth Sow-thistle | 1183 |
| Sonchus sp. | a sow-thistle | 2 |
| Sorbus aria agg. | Whitebeam | 49 |
| Sorbus aucuparia | Rowan | 91 |
| Sorbus torminalis | Wild Service-tree | 2 |
| Sparganium emersum | Unbranched Bur-reed | 18 |
| Sparganium erectum | Branched Bur-reed | 307 |
| Sparganium natans | Least Bur-reed | 1 |
| Spartina alterniflora x maritima (S. x townsendii) | Townsend’s Cord-grass | 59 |
| Spergula arvensis | Corn Spurrey | 114 |
| Spergularia marina | Lesser Sea-spurrey | 22 |
| Spergularia media | Greater Sea-spurrey | 71 |
| Spergularia rubra | Sand Spurrey | 28 |
| Spergularia rupicola | Rock Sea-spurrey | 2 |
| Sphagnum sp. | a bog moss | 46 |
| Spiranthes spiralis | Autumn Lady’s-tresses | 19 |
| Spirodela polyrhiza | Greater Duckweed | 2 |
| Stachys arvensis | Field Woundwort | 35 |
| Stachys officinalis | Betony | 729 |
| Stachys palustris | Marsh Woundwort | 191 |
| Stachys sylvatica | Hedge Woundwort | 1360 |
| Stellaria graminea | Lesser Stitchwort | 963 |
| Stellaria holostea | Greater Stitchwort | 790 |
| Stellaria media | Common Chickweed | 741 |
| Stellaria neglecta | Greater Chickweed | 14 |
| Stellaria pallida | Lesser Chickweed | 2 |
| Stellaria palustris | Marsh Stitchwort | 3 |
| Stellaria uliginosa | Bog Stitchwort | 168 |
| Suaeda maritima | Annual Sea-blite | 53 |
| Suaeda vera | Shrubby Seablite | 25 |
| Succisa pratensis | Devil’s-bit Scabious | 870 |
| Symphoricarpos albus | Snowberry | 15 |
| Symphytum officinale | Common Comfrey | 483 |
| Symphytum tuberosum | Tuberous Comfrey | 1 |
| Syringa vulgaris | Lilac | 7 |
| Top | ||
| Tamarix gallica | Tamarisk | 4 |
| Tamus communis | Black Bryony | 1492 |
| Tanacetum parthenium | Feverfew | 8 |
| Tanacetum vulgare | Tansy | 22 |
| Taraxacum laevigatum | Lesser Dandelion | 1 |
| Taraxacum officinale agg. | Dandelion | 1572 |
| Taxus baccata | Yew | 75 |
| Tephroseris integrifolia | Field Fleawort | 1 |
| Teucrium scorodonia | Wood Sage | 1013 |
| Thalictrum flavum | Common Meadow-rue | 38 |
| Thesium humifusum | Bastard-toadflax | 29 |
| Thlaspi arvense | Field Penny-cress | 16 |
| Thuidium tamariscinum | a moss | 2 |
| Thymus polytrichus | Wild Thyme | 596 |
| Thymus pulegioides | Large Thyme | 9 |
| Tilia sp. | a lime | 37 |
| Torilis arvensis | Spreading Hedge-parsley | 2 |
| Torilis japonica | Upright Hedge-parsley | 692 |
| Torilis nodosa | Knotted Hedge-parsley | 8 |
| Tragopogon porrifolius | Salsify | 1 |
| Tragopogon pratensis | Goat’s-beard | 107 |
| Trichophorum cespitosum | Deergrass | 186 |
| Trifolium arvense | Hare’s-foot Clover | 12 |
| Trifolium campestre | Hop Trefoil | 240 |
| Trifolium dubium | Lesser Trefoil | 563 |
| Trifolium echinatum | Hedgehog Clover | 1 |
| Trifolium fragiferum | Strawberry Clover | 283 |
| Trifolium glomeratum | Clustered Clover | 5 |
| Trifolium hybridum | Alsike Clover | 61 |
| Trifolium incarnatum | Crimson Clover | 6 |
| Trifolium medium | Zigzag Clover | 63 |
| Trifolium micranthum | Slender Trefoil | 30 |
| Trifolium ornithopodioides | Bird’s-foot clover | 5 |
| Trifolium pratense | Red Clover | 2038 |
| Trifolium repens | White Clover | 2498 |
| Trifolium scabrum | Rough Clover | 20 |
| Trifolium sp. | a legume | 2 |
| Trifolium squamosum | Sea Clover | 7 |
| Trifolium striatum | Knotted Clover | 6 |
| Trifolium subterraneum | Subterranean Clover | 5 |
| Trifolium suffocatum | Suffocated Clover | 4 |
| Triglochin maritimum | Sea Arrowgrass | 64 |
| Triglochin palustre | Marsh Arrowgrass | 21 |
| Tripleurospermum inodorum | Scentless Mayweed | 378 |
| Trisetum flavescens | Yellow Oat-grass | 1287 |
| Tulipa sylvestris | Wild Tulip | 2 |
| Tussilago farfara | Colt’s-foot | 173 |
| Typha angustifolia | Lesser Bulrush | 12 |
| Typha latifolia | Bulrush | 68 |
| Top | ||
| Ulex europaeus | Gorse | 1467 |
| Ulex gallii | Western Gorse | 118 |
| Ulex minor | Dwarf Gorse | 281 |
| Ulmus glabra | Wych Elm | 180 |
| Ulmus procera | English Elm | 241 |
| Ulmus sp. | an elm | 228 |
| Umbilicus rupestris | Navelwort | 99 |
| Urtica dioica | Common Nettle | 2987 |
| Urtica urens | Small Nettle | 16 |
| Usnea florida | a lichen | 1 |
| Utricularia australis | Bladderwort | 10 |
| Utricularia intermedia sens.str. | Intermediate Bladderwort | 2 |
| Utricularia minor | Lesser Bladderwort | 16 |
| Utricularia ochroleuca | Pale Bladderwort | 5 |
| Utricularia sp. | a bladderwort | 1 |
| Utricularia vulgaris sens.str. | Greater Bladderwort | 2 |
| Top | ||
| Vaccinium myrtillus | Bilberry | 35 |
| Valeriana dioica | Marsh Valerian | 66 |
| Valeriana officinalis | Common Valerian | 393 |
| Valerianella dentata | Narrow-fruited Cornsalad | 16 |
| Valerianella locusta | Common Cornsalad | 4 |
| Valerianella rimosa | Broad-fruited Cornsalad | 15 |
| Verbascum blattaria | Moth Mullein | 2 |
| Verbascum nigrum | Dark Mullein | 7 |
| Verbascum thapsus | Great Mullein | 254 |
| Verbascum virgatum | Twiggy Mullein | 1 |
| Verbena officinalis | Vervain | 31 |
| Veronica agrestis | Green Field-speedwell | 38 |
| Veronica anagallis-aquatica | Blue Water-speedwell | 148 |
| Veronica arvensis | Wall Speedwell | 439 |
| Veronica beccabunga | Brooklime | 437 |
| Veronica chamaedrys | Germander Speedwell | 2046 |
| Veronica hederifolia | Ivy-leaved Speedwell [agg.] | 151 |
| Veronica montana | Wood Speedwell | 325 |
| Veronica officinalis | Heath Speedwell | 494 |
| Veronica persica | Common Field-speedwell | 539 |
| Veronica scutellata | Marsh Speedwell | 32 |
| Veronica serpyllifolia | Thyme-leaved Speedwell | 477 |
| Veronica sp. | a speedwell | 2 |
| Viburnum lantana | Wayfaring-tree | 821 |
| Viburnum opulus | Guelder-rose | 380 |
| Vicia bithynica | Bithynian Vetch | 2 |
| Vicia cracca | Tufted Vetch | 871 |
| Vicia hirsuta | Hairy Tare | 68 |
| Vicia lathyroides | Spring Vetch | 3 |
| Vicia lutea | Yellow Vetch | 2 |
| Vicia parviflora | Slender Tare | 1 |
| Vicia sativa | Common Vetch | 238 |
| Vicia sativa ssp. nigra | Narrow-leaved Vetch | 61 |
| Vicia sepium | Bush Vetch | 1012 |
| Vicia sp. | a legume | 1 |
| Vicia sylvatica | Wood Vetch | 5 |
| Vicia tetrasperma | Smooth Tare | 53 |
| Vinca major | Greater Periwinkle | 5 |
| Vinca minor | Lesser Periwinkle | 19 |
| Viola arvensis | Field Pansy | 43 |
| Viola canina | Heath Dog-violet | 48 |
| Viola hirta | Hairy Violet | 607 |
| Viola lactea | Pale Dog-violet | 7 |
| Viola lactea x riviniana | a violet | 2 |
| Viola odorata | Sweet Violet | 618 |
| Viola palustris | Marsh Violet | 51 |
| Viola reichenbachiana | Early Dog-violet | 332 |
| Viola reichenbachiana/riviniana | a violet | 1 |
| Viola riviniana | Common Dog-violet | 1327 |
| Viola sp. | a violet | 380 |
| Viola tricolor | Wild Pansy | 73 |
| Viola x intersita | a violet | 3 |
| Viola x militaris | a violet | 2 |
| Viola x scabra | a violet | 9 |
| Viscum album | Mistletoe | 3 |
| Vitis vinifera | Grape-vine | 1 |
| Vulpia bromoides | Squirrel-tail Fescue | 48 |
| Vulpia ciliata ssp. ambigua | Purple Fescue | 2 |
| Vulpia myuros | Rat’s-tail Fescue | 2 |
| Wahlenbergia hederacea | Ivy-leaved Bellflower | 7 |
| Zannichellia palustris | Horned Pondweed | 11 |
| Zostera angustifolia | Narrow-leaved Eelgrass | 1 |
| Zostera marina | Eelgrass | 2 |
| Zostera noltii | Dwarf Eelgrass | 3 |