| Aceras anthropophorum | Man Orchid | 2001 Box Hill |
| Aceras anthropophorum | Man Orchid | 2001 Kent |
| Agrostis stolonifera | Creeping Bent | 2001 Woodside Quarry Leeds |
| Ajuga reptans | Bugle | 2001 Box Hill |
| Alisma lanceolata | Lanceolate Water-plantain | 2001 Surrey |
| Allium ampeloprasum var. babingtonii | Babington's Leek | 2001 Cornwall |
| Allium scorodoprasum | Sand Leek | 2001 Teesside |
| Alopecurus aequalis | Orange Foxtail | 2001 Clatworthy Reservoir |
| Alopecurus geniculatus | Marsh Foxtail | 2001 Clatworthy Reservoir |
| Althaea hirsuta | Rough Marsh Mallow | 2001 Kent |
| Althaea officinalis | Marsh-mallow | 2001 Cornwall |
| Anacamptis pyramidalis | Pyramidal Orchid | 2001 Buckinghamshire |
| Anagallis minima | Chaffweed | 2001 Cornwall |
| Antirrhinum majus | Snapdragon | 2001 Teesside |
| Apium graveolens | Wild Celery | 2001 Teesside |
| Arabis hirsuta | Hairy Rockcress | 2001 Surrey |
| Arenaria serpyllifolia ssp. leptoclados | Slender Thyme-leaved Sandwort | 2001 Teesside |
| Asperula cynanchica | Squinancywort | 2001 Buckinghamshire |
| Asplenium adiantum-nigrum | Black Spleenwort | 2001 Surrey |
| Asplenium ruta-muraria | Wall Rue | 2001 Surrey |
| Asplenium trichomanes | Maidenhair Spleenwort | 2001 Surrey |
| Astragalus danicus | Purple Milk-vetch | 2001 Teesside |
| Atriplex laciniata | Frosted Orache | 2001 Cornwall |
| Atropa belladonna | Deadly Nightshade | 2001 Buckinghamshire |
| Bergina crassifolia | Elephant-ears | 2001 Teesside |
| Blackstonia perfoliata | Yellow-wort | 2001 Buckinghamshire |
| Blysmus compressus | Flat-headed Sedge | 2001 Teesside |
| Blysmus compressus | Flat Sedge | 2001 Ainsdale Lancs |
| Bolboschoenus maritimus | Sea Club-rush | 2001 Teesside |
| Bolboschoenus maritimus | Sea Clubrush | 2001 Kent |
| Brassica oleracea var. oleracea | Wild Cabbage | 2001 Cornwall |
| Briza media | Quaking-grass | 2001 Box Hill |
| Briza media | Quaking-grass | 2001 Buckinghamshire |
| Bromopsis inermis | Hungarian Brome | 2001 Ainsdale Lancs |
| Bromus hordaeceus | Soft Brome | 2001 Kent |
| Bromus x pseudothominei | Lesser Soft Brome | 2001 Kent |
| Cakile maritima | Sea Rocket | 2001 Cornwall |
| Calystegia soldanella | Sea Bindweed | 2001 Cornwall |
| Carex distans | Distant Sedge | 2001 Teesside |
| Carex distans | Distant Sedge | 2001 Ainsdale Lancs |
| Carex disticha | Brown Sedge | 2001 Ainsdale Lancs |
| Carex extensa | Long-bracted Sedge | 2001 Teesside |
| Carex extensa | Long-bracted Sedge | 2001 Ainsdale Lancs |
| Carex muricata ssp. lamprocarpa | Prickly Sedge | 2001 Penlee NR Cornwall |
| Centaurea montana | Perennial Cornflower | 2001 Surrey |
| Centaurea x moncktonii | Hybrid Knapweed | 2001 Teesside |
| Centaurium erythraea | Common Centaury | 2001 Penlee NR Cornwall |
| Centaurium pulchellum | Lesser Centaury | 2001 Penlee NR Cornwall |
| Cephalanthera damasonium | White Helleborine | 2001 Box Hill |
| Cephalanthera rubra | Red Helleborine | 2001 Buckinghamshire |
| Cerastium arvense | Field Mouse-ear | 2001 Teesside |
| Ceratocapnos claviculata | Climbing Corydalis | 2001 Surrey |
| Ceterach officinarum | Rustyback Fern | 2001 Box Hill |
| Ceterach officinarum | Rustyback Fern | 2001 Surrey |
| Chaenorhinum minus | Small Toadflax | 2001 Teesside |
| Chaenorhinum origanifolium | Malling Toadflax | 2001 Kent |
| Chamaemelum nobile | Chamomile | 2001 Surrey |
| Chenopodium ficifolium | Fig-leaved Goosefoot | 2001 Cornwall |
| Cichorium intybus | Chicory | 2001 Teesside |
| Clinopodium acinos | Basil Thyme | 2001 Buckinghamshire |
| Coeloglossum viride | Frog Orchid | 2001 Watlington Hill Oxf. |
| Coeloglossum viride | Frog Orchid | 2001 Merrow Downs |
| Coincya monensis ssp. cheiranthos | Wallflower Cabbage | 2001 Cornwall |
| Coincya monensis ssp. monensis | Isle of Man Cabbage | 2001 Ainsdale Lancs |
| Cotoneaster conspicuus | Tibetan Cotoneaster | 2001 Woodside Quarry Leeds |
| Cotoneaster hjelmqvistii | Hjelmqvist's Cotoneaster | 2001 Woodside Quarry Leeds |
| Cotoneaster mairei | Maire's Cotoneaster | 2001 Woodside Quarry Leeds |
| Cotoneaster rehderi | Bullate Cotoneaster | 2001 Woodside Quarry Leeds |
| Crambe cordiflora | Greater Sea-kale | 2001 Ainsdale Lancs |
| Crassula helmsii | New Zealand Pigmyweed | 2001 Surrey |
| Crassula tillaea | Mossy Stonecrop | 2001 Cornwall |
| Crataegus persimilis | Broad Leaf Cockspur Thorn | 2001 Surrey |
| Cuscuta epithymum | Dodder | 2001 Penlee NR Cornwall |
| Cynodon dactylon | Bermuda Grass | 2001 Surrey |
| Cynoglossum germanicum | Green Hound's-tongue | 2001 Watlington Hill Oxf. |
| Cynoglossum germanicum | Green Houndstongue | 2001 Surrey |
| Cynoglossum germanicum | Green Hound's-tongue | 2001 Box Hill |
| Cynoglossum officinale | Houndstongue | 2001 Kent |
| Cynosurus cristatus | Crested Dogstail | 2001 Kent |
| Cyperus eragrostis | Pale Galingale | 2001 Cornwall |
| Cyperus eragrostis | Pale Galingale | 2001 Surrey |
| Cyperus longus | Galingale | 2001 Ainsdale Lancs |
| Dactylorhiza fuchsii | Common Spotted-orchid | 2001 Box Hill |
| Dactylorhiza fuchsii | Common Spotted Orchid | 2001 Buckinghamshire |
| Dactylorhiza purpurella | Northern Marsh Orchid | 2001 Teesside |
| Dactylorhiza purpurella var. atrata | Black Orchid | 2001 Teesside |
| Damasonium alisma | Starfruit | 2001 Buckinghamshire |
| Daphne laureola | Spurge Laurel | 2001 Kent |
| Daphne mezereum | Mezereon | 2001 Watlington Hill Oxf. |
| Dianthus barbatus | Sweet William | 2001 Ainsdale Lancs |
| Diplotaxis muralis | Annual Wall-rocket | 2001 Hampton Court |
| Dryopteris aemula | Hay-scented Buckler-fern | 2001 Cornwall |
| Dryopteris carthusiana | Narrow Buckler-fern | 2001 Watlington Hill Oxf. |
| Elatine hexandra | Six-stamened Waterwort | 2001 Clatworthy Reservoir |
| Eleocharis quinquefolia | Few-flowered Spike Rush | 2001 Ainsdale Lancs |
| Epilobium brunnescens | New Zealand Willowherb | 2001 Cornwall |
| Epilobium pedunculare | Rockery Willowherb | 2001 Cornwall |
| Epipactis helleborine | Broad-leaved Helleborine | 2001 Buckinghamshire |
| Epipactis leptochila | Narrow-lipped Helleborine | 2001 Watlington Hill Oxf. |
| Epipactis leptochila | Narrow-lipped Helleborine | 2001 Buckinghamshire |
| Epipactis phyllanthes | Green-flowered Helleborine | 2001 Watlington Hill Oxf. |
| Epipactis purpurata | Violet Helleborine | 2001 Watlington Hill Oxf. |
| Equisetum fluviatile | Water Horsetail | 2001 Kent |
| Equisetum telmateia | Great Horsetail | 2001 Kent |
| Erodium lebelii | Sticky Stork's-bill | 2001 Teesside |
| Erodium moschatum | Musk Stork's-bill | 2001 Penlee NR Cornwall |
| Erysimum cheiranthoides | Treacle Mustard | 2001 Teesside |
| Euphorbia paralias | Sea Spurge | 2001 Cornwall |
| Euphorbia x pseudoesula | Figert's Spurge | 2001 Teesside |
| Euphorbia x pseudovirgata | Leafy Spurge | 2001 Teesside |
| Euphrasia vigursii | Vigur's Eyebright | 2001 Cornwall |
| Festuca arenaria | Rush-leaved Fescue | 2001 Teesside |
| Festuca brevipila | Hard Fescue | 2001 Kent |
| Festuca rubra ssp. megastachys | Red Fescue | 2001 Kent |
| Filago minima | Small Cudweed | 2001 Cornwall |
| Filago vulgaris | Common Cudweed | 2001 Kent |
| Fumaria muralis | Ramping Fumitory | 2001 Ainsdale Lancs |
| Fumaria officinalis | Common Fumitory | 2001 Ainsdale Lancs |
| Fumaria purpurea | Purple Fumitory | 2001 Ainsdale Lancs |
| Gentianella anglica | Early Gentian | 2001 Surrey |
| Geranium macrorrhizum | Rock Crane's-bill | 2001 Ainsdale Lancs |
| Geranium pyrenaicum | Pyrenean Crane's-bill | 2001 Ainsdale Lancs |
| Geranium sanguineum | Bloody Crane's-bill | 2001 Ainsdale Lancs |
| Geranium submolle | Alderney Crane's-bill | 2001 Cornwall |
| Geum urbanum | Wood Avens | 2001 Box Hill |
| Glyceria declinata | Small Sweet-grass | 2001 Penlee NR Cornwall |
| Glyceria fluitans | Floating Sweet-grass | 2001 Kent |
| Glyceria maxima | Reed Sweet-grass | 2001 Teesside |
| Glyceria notata | Plicate Sweet-grass | 2001 Surrey |
| Glyceria notata | Plicate Sweet-grass | 2001 Kent |
| Gymnadenia conopsea | Fragrant Orchid | 2001 Kent |
| Gymnadenia conopsea | Fragrant Orchid | 2001 Buckinghamshire |
| Helianthemum nummularium | Rockrose | 2001 Buckinghamshire |
| Helianthus annuus | Sunflower | 2001 Cornwall |
| Helleborus foetidus | Stinking Hellebore | 2001 Kent |
| Herminium monorchis | Musk Orchid | 2001 Surrey |
| Herminium monorchis | Musk Orchid | 2001 Buckinghamshire |
| Herniaria glabra | Smooth Rupturewort | 2001 Ainsdale Lancs |
| Hieracium eboracense | Hawkweed | 2001 Teesside |
| Hieracium exotericum agg. | Hawkweed | 2001 Ainsdale Lancs |
| Hieracium umbellatum | Hawkweed | 2001 Ainsdale Lancs |
| Hieracium vulgatum | Hawkweed | 2001 Ainsdale Lancs |
| Himantoglossum hircinum | Lizard Orchid | 2001 Merrow Downs |
| Hippocrepis comosa | Horse-shoe Vetch | 2001 Buckinghamshire |
| Hippuris vulgaris | Mare's-tail | 2001 Teesside |
| Hirschfeldia incana | Hoary Mustard | 2001 Hampton Court |
| Hottonia palustris | Water Violet | 2001 Kent |
| Hypericum hircinum | Stinking Tutsan | 2001 Hampton Court |
| Hypericum undulatum | Wavy St John's-wort | 2001 Cornwall |
| Hypericum x desetangsii= H. perforatum x H. maculatum | Des Etangs' St John's-wort | 2001 Cornwall |
| Iberis amara | Wild Candytuft | 2001 Watlington Hill Oxf. |
| Iberis amara | Candytuft | 2001 Buckinghamshire |
| Impatiens capensis | Orange Balsam | 2001 Hampton Court |
| Isolepis cernua | Slender Club-rush | 2001 Cornwall |
| Juncus ambiguous | Frog Rush | 2001 Teesside |
| Juncus balticus | Baltic Rush | 2001 Ainsdale Lancs |
| Juncus gerardii | Saltmarsh Rush | 2001 Teesside |
| Kniphofia praecox | Red-hot Poker | 2001 Teesside |
| Koeleria cristata | Crested Hair-grass | 2001 Buckinghamshire |
| Lactuca virosa | Great Lettuce | 2001 Teesside |
| Lagurus ovatus | Hare's Tail | 2001 Ainsdale Lancs |
| Lathyrus nissolia | Grass Vetchling | 2001 Surrey |
| Leontodon hispidus | Hawkbit | 2001 Teesside |
| Leontodon saxatilis | Lesser Hawkbit | 2001 Teesside |
| Ligustrum ovalifolium | Garden Privet | 2001 Merrow Downs |
| Limosella aquatica | Mudwort | 2001 Hampton Court |
| Listera ovata | Twayblade | 2001 Buckinghamshire |
| Lobelia urens | Heath Lobelia | 2001 Cornwall |
| Lonicera japonica | Japanese Honeysuckle | 2001 Cornwall |
| Lychnis flos-jovii | Flower of Jove | 2001 Teesside |
| Lycium barbarum | Duke of Argyll's teaplant | 2001 Cornwall |
| Lycopersicon esculentum | Tomato | 2001 Cornwall |
| Medicago arabica | Spotted Medick | 2001 Ainsdale Lancs |
| Medicao sativa | Lucerne | 2001 Teesside |
| Melilotus altissimus | Tall Melilot | 2001 Teesside |
| Mentha aquatica | Water Mint | 2001 Clatworthy Reservoir |
| Mentha arvensis | Corn Mint | 2001 Clatworthy Reservoir |
| Mentha x gracilis | Hybrid Mint M. arvensis x M. spicata | 2001 Clatworthy Reservoir |
| Mentha x verticillata | Hybrid Mint M. arvensis x M aquatica | 2001 Clatworthy Reservoir |
| Mercurialis perennis | Dog's Mercury | 2001 Box Hill |
| Mibora minima | Early Sand-grass | 2001 Ainsdale Lancs |
| Mimulus moschatus | Musk | 2001 Clatworthy Reservoir |
| Myosotis laxa | Tufted Water Forget-me-not | 2001 Teesside |
| Neottia nidus-avis | Bird's-nest Orchid | 2001 Watlington Hill Oxf. |
| Neottia nidus-avis | Bird's-nest Orchid | 2001 Box Hill |
| Neottia nidus-avis | Bird's-nest Orchid | 2001 Buckinghamshire |
| Ophrys apifera | Bee Orchid | 2001 Teesside |
| Ophrys apifera | Bee Orchid | 2001 Box Hill |
| Ophrys apifera | Bee Orchid | 2001 Surrey |
| Ophrys apifera | Bee-Orchid | 2001 Ainsdale Lancs |
| Orchis apifera | Bee Orchid | 2001 Kent |
| Orchis purpurea | Lady Orchid | 2001 Kent |
| Ornithopus perpusillus | Birdsfoot | 2001 Surrey |
| Orobanche minor | Common Broomrape | 2001 Surrey |
| Orobanche rapum-genistae | Greater Broomrape | 2001 Clatworthy Reservoir |
| Papaver orientalis | Oriental Poppy | 2001 Ainsdale Lancs |
| Parentucellia viscosa | Yellow Bartsia | 2001 Penlee NR Cornwall |
| Petroselinum segetum | Parsley | 2001 Teesside |
| Phalaris arundinacea | Reed Canary-grass | 2001 Teesside |
| Physalis alkekengi | Japanese Lantern | 2001 Merrow Downs |
| Physospermum cornubiense | Cornish Bladderseed | 2001 Cornwall |
| Phyteuma orbiculare | Round-headed Rampion | 2001 Merrow Downs |
| Platanthera chlorantha | Greater Butterfly-orchid | 2001 Box Hill |
| Polygonatum multiflorum | Solomon's Seal | 2001 Watlington Hill Oxf. |
| Polygonum maritimum | Sea Knotgrass | 2001 Cornwall |
| Polygonum oxyspermum ssp. raii | Ray's Knotgrass | 2001 Cornwall |
| Polypogon monspeliensis | Annual Beard-grass | 2001 Woodside Quarry Leeds |
| Polypogon viridis | Water Bent | 2001 Cornwall |
| Polystichum munitum | Western Sword-fern | 2001 Cornwall |
| Polystichum setiferum x Polystichum munitum | Soft Shield-fern x Western Sword-fern | 2001 Cornwall |
| Potentilla x suberecta | Hybrid Cinquefoil P. erecta x P. anglica | 2001 Clatworthy Reservoir |
| Prunus cerasifera | Cherry Plum | 2001 Merrow Downs |
| Puccinellia distans | Reflexed Saltmarsh Grass | 2001 Kent |
| Radiola linoides | Allseed | 2001 Cornwall |
| Ranunculus parviflorus | Small-flowered Buttercup | 2001 Ainsdale Lancs |
| Ranunculus sardous | Hairy Buttercup | 2001 Ainsdale Lancs |
| Raphanus raphanistrum ssp. maritimus | Sea Radish | 2001 Cornwall |
| Rapistrum perenne | Steppe Cabbage | 2001 Teesside |
| Rorippa amphibia | Great Yellow-cress | 2001 Teesside |
| Rorippa islandica | Northern Yellow-cress | 2001 Clatworthy Reservoir |
| Rorippa palustris | Marsh Yellow-cress | 2001 Clatworthy Reservoir |
| Rosa ferruginea | Red-leaved Rose | 2001 Woodside Quarry Leeds |
| Rosa rubiginosa | Sweet Briar | 2001 Ainsdale Lancs |
| Rubus armeniacus | Bramble | 2001 Ainsdale Lancs |
| Rubus phoenicolasius | Japanese Wineberry | 2001 Cornwall |
| Rubus plicatus | Bramble | 2001 Surrey |
| Rubus tuberculatus | Bramble | 2001 Ainsdale Lancs |
| Rumex crispus ssp. littoreus | Curled Dock | 2001 Teesside |
| Rumex hydrolapathum | Water Dock | 2001 Cornwall |
| Rumex x pratensis | Hybrid Dock | 2001 Kent |
| Salsola kali ssp. kali | Prickly Saltwort | 2001 Cornwall |
| Salvia pratensis | Meadow Clary | 2001 Kent |
| Salvia verbenaca | Wild Clary | 2001 Hampton Court |
| Sanguisorba minor ssp. muricata | Fodder Burnet | 2001 Cornwall |
| Sanicula europaea | Sanicle | 2001 Box Hill |
| Santolina chamaecyparissus | Lavender Cotton | 2001 Ainsdale Lancs |
| Schoenoplectus tabernaemontani | Grey Club-rush | 2001 Teesside |
| Schoenoplectus tabernaemontani | Grey Club-rush | 2001 Cornwall |
| Scilla autumnalis | Autumn Squill | 2001 Hampton Court |
| Scrophularia scorodonia | Balm-leaved Figwort | 2001 Cornwall |
| Scutellaria galericulata | Skull-cap | 2001 Cornwall |
| Securigera varia | Crown Vetch | 2001 Teesside |
| Sedum sexangulare | Tasteless Stonecrop | 2001 Woodside Quarry Leeds |
| Sedum sp. | Stonecrops | 2001 Teesside |
| Sedum spectabile | Butterfly Stonecrop | 2001 Ainsdale Lancs |
| Senecio inaeqidens | Narrow-leaved Ragwort | 2001 Kent |
| Sibthorpia europaea | Cornish Moneywort | 2001 Cornwall |
| Sinapis arvensis | Charlock | 2001 Teesside |
| Sisymbrium orientale | Eastern Rocket | 2001 Teesside |
| Sorbus aucuparia | Rowan | 2001 Surrey |
| Sorbus intermedia | Swedish Whitebeam | 2001 Surrey |
| Sorbus torminalis | Wild Service Tree | 2001 Surrey |
| Spartium junceum | Spanish Broom | 2001 Teesside |
| Spergularia bocconei | Greek Sea-spurrey | 2001 Cornwall |
| Spergularia rupicola | Rock Sea-spurrey | 2001 Penlee NR Cornwall |
| Stachys x ambigua | Hybrid Woundwort | 2001 Surrey |
| Tephroseris integrifolia ssp. integrifolia | Field Fleawort | 2001 Buckinghamshire |
| Thalictrum minus | Lesser Meadow-rue | 2001 Ainsdale Lancs |
| Trifolium campestre | Hop Trefoil | 2001 Penlee NR Cornwall |
| Trifolium fragiferum | Strawberry Clover | 2001 Cornwall |
| Trifolium micranthum | Slender Trefoil | 2001 Ainsdale Lancs |
| Trifolium ornithopodioides | Bird's-foot Clover | 2001 Cornwall |
| Trifolium striatum | Knotted Clover | 2001 Ainsdale Lancs |
| Verbascum densiflorum | Large-flowered Mullein | 2001 Teesside |
| Verbascum lychnitis | White Mullein | 2001 Kent |
| Veronica catenata | Pink Water-speedwell | 2001 Teesside |
| Vulpia unilateralis | Mat-grass Fescue | 2001 Kent |
| x Agropogon littoralis | Perennial Beard-grass | 2001 Woodside Quarry Leeds |
| x Festulolium loliaceum | Meadow Fescue x Rye Grass | 2001 Kent |