| Abies grandis | Giant fir | 1997 Ben Lawers |
| Acorus calamus | Sweet Flag | 1997 Derbyshire and Cheshire |
| Actaea spicata | Baneberry | 1997 North York Moors |
| Agrimonia procera | Fragrant Agrimony | 1997 Cheshire/Derbys border |
| Agrimonia procera | Fragrant Agrimony. | 1997 Devon |
| Agrostis castellana | Highland Bent | 1997 Derbyshire and Cheshire |
| Alchemilla alpina | Alpine Lady's-mantle | 1997 Ben Lawers |
| Allium carinatum | Keeled Garlic | 1997 Avon Gorge |
| Allium paradoxum | Few-flowered Garlic | 1997 Selbourne |
| Allium roseum | Rosy Garlic | 1997 Avon Gorge |
| Allium scorodoprasum | Sand Leek | 1997 Morayshire |
| Allium sphaerocephalon NIF | Round-headed Leek | 1997 Avon Gorge |
| Allium vineale | Crow Garlic | 1997 Avon Gorge |
| Alopecurus bulbosus | Bulbous Foxtail | 1997 East Head West Sussex |
| Ambrosia psilostachya | Perennial Ragweed | 1997 Lancashire |
| Amsinckia micrantha | Common Fiddleneck | 1997 Morayshire |
| Anacamptis pyramidalis | Pyramidal Orchid | 1997 Llandudno/ Cwm Idwal |
| Anchusa arvensis | Bugloss | 1997 Morayshire |
| Angelica archangelica | Garden Angelica | 1997 Lancashire |
| Anisantha diandra | Great Brome | 1997 Morayshire |
| Anisantha madritensis | Compact Brome | 1997 Avon Gorge |
| Apium inundatum | Lesser Marshwort | 1997 North York Moors |
| Arabis hirsuta | Hoary Rock-cress | 1997 Llandudno/Cwm Idwal |
| Arabis hirsuta | Hairy Rockcress | 1997 Derbyshire and Cheshire |
| Arabis stricta | Bristol Rockcress | 1997 Avon Gorge |
| Arbutus unedo | Strawberry Tree | 1997 Llandudno /Cwm Idwal |
| Armeria maritima | Thrift | 1997 Morayshire |
| Arum italicum ssp. neglectum | Italian Lords-and-Ladies | 1997 Selbourne |
| Asarina procumbens | Trailing Snapdragon | 1997 Llandudno /Cwm Idwal |
| Asperula cynanchica | Squinancywort | 1997 Maidenhead |
| Asplenium viride | Green Spleenwort | 1997 Llandudno /Cwm Idwal |
| Asplenium viride | Green Spleenwort | 1997 Derbyshire and Cheshire |
| Aster linosyris | Goldilocks Aster | 1997 Llandudno /Cwm Idwal |
| Astragalus alpinus | Alpine Milk-vetch | 1997 Ben Lawers |
| Baldellia ranunculoides | Lesser Water-plantain | 1997 Lancashire |
| Blysmus rufus | Saltmarsh Flat-sedge | 1997 Morayshire |
| Brassica juncea | Chinese Mustard | 1997 Ogden reservoir, W.Yorks |
| Brassica oleracea | Wild Cabbage | 1997 Llandudno /Cwm Idwal |
| Brassica oleracea | Wild Cabbage | 1997 North York Moors |
| Bromopsis inermis | Hungarian Brome | 1997 Lancashire |
| Cakile maritima | Sea Rocket | 1997 Llandudno /Cwm Idwal |
| Calamagrostis canescens | Purple Small-reed | 1997 Derbyshire and Cheshire |
| Calystegia sepium | Hedge Bindweed | 1997 Surrey |
| Calystegia silvatica | Large Bindweed | 1997 Surrey |
| Calystegia x lucana | Hybrid | 1997 Surrey |
| Campanula latifolia | Giant Bellflower | 1997 Morayshire |
| Campanula rapunculoides | Creeping Bellflower | 1997 Lancashire |
| Campanula rotundifolia | Harebell | 1997 Morayshire |
| Campanula trachelium | Nettle-leaved Bellflower | 1997 Derbyshire and Cheshire |
| Cardamine bulbifera | Coralroot | 1997 Selbourne |
| Cardamine bulbifera | Coralroot | 1997 North York Moors |
| Cardamine impatiens | Narrow-leaved Bittercress | 1997 Derbyshire and Cheshire |
| Cardamine raphanifolia | Greater Cuckooflower | 1997 North York Moors |
| Carex atrofusca | Scorched Alpine Sedge | 1997 Ben Lawers |
| Carex capillaris | Hair Sedge | 1997 Ben Lawers |
| Carex digitata | Fingered Sedge | 1997 Avon Gorge |
| Carex digitata | Fingered Sedge | 1997 North York Moors |
| Carex dioica | Dioecious Sedge | 1997 Llandudno /Cwm Idwal |
| Carex dioica | Dioecious Sedge | 1997 Ben Lawers |
| Carex extensa | Long-bracted Sedge | 1997 Morayshire |
| Carex humilis | Dwarf Sedge | 1997 Avon Gorge |
| Carex limosa | Bog Sedge | 1997 North York Moors |
| Carex microglochin | Bristle Sedge | 1997 Ben Lawers |
| Carex ornithopoda | Bird's-foot Sedge | 1997 Derbyshire and Cheshire |
| Carex pseudocyperus | Cyperus Sedge | 1997 Gordano Valley, Somerset |
| Carex riparia | Greater Pond Sedge | 1997 Avon Gorge |
| Carex rupestris | Rock Sedge | 1997 Ben Lawers |
| Carex saxatilis | Russet Sedge | 1997 Ben Lawers |
| Carex strigosa | Thin-spiked Wood Sedge | 1997 North York Moors |
| Carex viridula ssp. brachyrrhyncha | Long-stalked Yellow-sedge | 1997 Gordano Valley, Somerset |
| Centaurea cyanus | Cornflower | 1997 Morayshire |
| Centaurium erythraea | Common Centaury | 1997 Lancashire |
| Centaurium littorale | Seaside Centaury | 1997 Morayshire |
| Centaurium littorale | Seaside Centaury | 1997 Lancashire |
| Cerastium alpinum | Alpine Mouse-ear | 1997 Ben Lawers |
| Cerastium arvense x Cerastium tomentosum | Hybrid Mouse-ear | 1997 Morayshire |
| Cerastium pumilum | Dwarf Mouse-ear | 1997 Avon Gorge |
| Ceratochloa carinata | California Brome | 1997 Morayshire |
| Ceterach officnarum | Rustyback Fern. | 1997 Avon Gorge |
| Chenopodium album | Fat Hen | 1997 Derbyshire and Cheshire |
| Chrysanthemum segetum | Corn Marigold | 1997 Morayshire |
| Cicuta virosa | Cowbane | 1997 Derbyshire and Cheshire |
| Cirsium eriophorum | Woolly Thistle | 1997 North York Moors |
| Citrullus lanatus | Water Melon | 1997 Ogden reservoir W. Yorks |
| Clinopodium acinos | Basil Thyme | 1997 Avon Gorge |
| Cochlearia anglica | English Scurvy-grass | 1997 Avon Gorge |
| Coeloglossum viride | Frog Orchid | 1997 Morayshire |
| Colutea arborescens | Bladder-senna | 1997 Cheshire/Derbys border |
| Conyza canadensis | Canadian Fleabane | 1997 Surrey |
| Conyza sumatrensis | Guernsey Fleabane | 1997 Surrey |
| Corallorrhiza trifida | Coralroot Orchid | 1997 Morayshire |
| Cornus suecica | Dwarf Cornel | 1997 North York Moors |
| Corydalis cava | Hollowroot | 1997 Ston Easton Somerset |
| Corynephorus canescens | Grey Hair-grass | 1997 Morayshire |
| Corynephorus canescens | Grey Hair-grass | 1997 Lancashire |
| Cotoneaster cambricus | Wild Cotoneaster | 1997 Llandudno /Cwm Idwal |
| Cotoneaster franchetii | Franchet's Cotoneaster | 1997 Llandudno /Cwm Idwal |
| Cotoneaster horizontalis | Wall Cotoneaster | 1997 Avon Gorge |
| Cotoneaster simonsii | Himalayan Cotoneaster | 1997 Llandudno /Cwm Idwal |
| Cotoneaster integrifolius | Cotoneaster horizontalis | 1997 Llandudno /Cwm Idwal |
| Crambe maritima | Sea-kale | 1997 Lancashire |
| Crassula helmsii | New Zealand Pigmyweed | 1997 Maidenhead |
| Crocus nudiflorus | Autumn Crocus | 1997 Ogden reservoir W. Yorks |
| Cryptogramma crispa | Parsley Fern | 1997 Llandudno / Cwm Idwal |
| Cucurbita maxima | Pumpkin | 1997 Ogden reservoir W. Yorks |
| Cyperus fuscus | Brown Galingale | 1997 Gordano Valley, Somerset |
| Cystopteris fragilis | Brittle Bladder-fern | 1997 Llandudno /Cwm Idwal |
| Dactylorhiza fuchsii x maculata | Common/Heath Spotted Orchid Hybrid | 1997 North York Moors |
| Dactylorhiza incarnata ssp. incarnata | Early Marsh Orchid | 1997 Lancashire |
| Dactylorhiza incarnata ssp. pulchella | Early Marsh Orchid | 1997 Lancashire |
| Dactylorhiza purpurella | Northern Marsh Orchid | 1997 North York Moors |
| Danthonia decumbens | Heath Grass | 1997 North York Moors |
| Descurainia sophia | Flixweed | 1997 Morayshire |
| Dianthus caryophyllus x plumarius | Hybrid Pink | 1997 North York Moors |
| Dianthus deltoides | Maiden Pink | 1997 Morayshire |
| Diphasiastrum alpinum | Alpine Club-moss | 1997 Llandudno /Cwm Idwal |
| Draba incana | Hoary Whitlow-grass | 1997 Derbyshire and Cheshire |
| Drosera rotundifolia | Round-leaved Sundew | 1997 North York Moors |
| Dryopteris affinis | Scaly Male Fern | 1997 Devon |
| Dryopteris submontana | Rigid Buckler-fern | 1997 Derbyshire and Cheshire |
| Eleocharis quinqueflora | Few-flowered Spike-rush | 1997 Morayshire |
| Empetrum nigrum | Crowberry | 1997 Morayshire |
| Epilobium alsinifolium | Chickweed Willowherb | 1997 Ben Lawers |
| Epilobium anagallidifolium | Alpine Willowherb | 1997 Ben Lawers |
| Epilobium brunnescens | New Zealand Willowherb | 1997 Llandudno and Cwm Idwal |
| Epilobium roseum | Pale Willowherb | 1997 Cheshire/Derbys border |
| Epipactis atrorubens | Dark-red Helleborine | 1997 Llandudno and Cwm Idwal |
| Epipactis leptochila var. dunensis | Narrow-lipped Helleborine | 1997 Lancashire |
| Epipactis palustris | Marsh Helleborine | 1997 North York Moors |
| Epipactis phyllanthes | Green-flowered Helleborine. | 1997 Maidenhead |
| Epipactis phyllanthes | Green-flowered Helleborine | 1997 Lancashire |
| Equisetum pratense | Common Horsetail | 1997 Ben Lawers |
| Equisetum x mildeanum | Hybrid Horsetail | 1997 Ben Lawers |
| Erigeron borealis | Alpine Fleabane | 1997 Ben Lawers |
| Eriophorum latifolium | Broad-leaved Cottongrass | 1997 Ben Lawers |
| Erodium maritimum | Sea Stork's-bill | 1997 Llandudno /Cwm Idwal |
| Erodium x anaristatum = E. lebelii x E. cicutarium | Hybrid Erodium | 1997 Lancashire |
| Eryngium maritimum | Sea Holly | 1997 East Head West Sussex |
| Eryngium maritimum | Sea-holly | 1997 Lancashire |
| Erysimum cheiri | Wallflower | 1997 Avon Gorge |
| Euphorbia x pseudovirgata | Twiggy Spurge | 1997 Lancashire |
| Euphrasia pseudo-kerneri | Eyebright | 1997 Maidenhead |
| Festuca heterophylla | Various-leaved Fescue | 1997 Morayshire |
| Festuca vivipara | Viviparous Fescue | 1997 Llandudno and Cwm Idwal |
| Filago minima | Small Cudweed | 1997 Morayshire |
| Filago vulgaris | Common Cudweed | 1997 Derbyshire and Cheshire |
| Filipendula vulgaris | Dropwort | 1997 Llandudno /Cwm Idwal |
| Frankenia laevis | Sea-heath | 1997 East Head West Sussex |
| Fumaria densiflora | Dense-flowered Fumitory | 1997 Morayshire |
| Fumaria muralis ssp. boraei | Common Ramping-fumitory | 1997 Derbyshire and Cheshire |
| Fumaria muralis ssp. boraei | Common Ramping Fumitory | 1997 North York Moors |
| Galeopsis speciosa | Large-flowered Hemp-nettle | 1997 Derbyshire and Cheshire |
| Galium mollugo ssp. erectum | Erect Bedstraw | 1997 Derbyshire and Cheshire |
| Gentiana nivalis | Snow Gentian | 1997 Ben Lawers |
| Geranium columbinum | Long-stalked Crane's-bill | 1997 Derbyshire and Cheshire |
| Geranium phaeum | Dusky Crane's-bill | 1997 North York Moors |
| Geranium purpureum | Little Robin | 1997 Avon Gorge |
| Geranium sanguineum | Bloody Crane's-bill | 1997 Llandudno / Cwm Idwal |
| Geranium sanguineum | Bloody Crane's-bill | 1997 Derbyshire and Cheshire |
| Geum rivale x Geum urbanum | Hybrid Avens | 1997 North York Moors |
| Glaucium flavum | Yellow-poppy | 1997 Lancashire |
| Gnaphalium sylvaticum | Heath Cudweed | 1997 Morayshire |
| Goodyera repens | Creeping Lady's-tresses | 1997 Morayshire |
| Grindelia stricta | Coastal Gumplant | 1997 North York Moors |
| Gymnocarpium dryopteris | Oak Fern | 1997 Llandudno and Cwm Idwal |
| Gymnocarpium robertianum | Limestone Polypody | 1997 Derbyshire and Cheshire |
| Hedera helix ssp. hibernica | Atlantic Ivy | 1997 Llandudno /Cwm Idwal |
| Helianthemum oelandicum ssp. incanum | Hoary Rock-rose | 1997 Llandudno /Cwm Idwal |
| Helleborus viridis | Green Hellebore | 1997 Selbourne |
| Heracleum mantegazzianum | Giant Hogweed | 1997 Morayshire |
| Herniaria glabra | Smooth Rupture-wort | 1997 Derbyshire and Cheshire |
| Hieracium brittaniciforme | Hoakweed | 1997 Llandudno /Cwm Idwal |
| Hieracium cymbifolium | Hawkweed | 1997 Derbyshire and Cheshire |
| Hieracium grandidens | Hawkweed | 1997 Llandudno / Cwm Idwal |
| Hieracium oistophyllum | Hawkweed | 1997 North York Moors |
| Hieracium pellucidum | Hawkweed | 1997 Derbyshire and Cheshire |
| Hieracium prenanthoides | Hawkweed | 1997 Derbyshire and Cheshire |
| Hieracium subplanifolium | Hawkweed | 1997 Derbyshire and Cheshire |
| Hippophae rhamnoides | Sea-buckthorn | 1997 Lancashire |
| Hirschfeldia incana | Hoary mustard | 1997 Cheshire/Derbys border |
| Hirschfeldia incana | Hoary Mustard | 1997 Llandudno /Cwm Idwal |
| Hornungia petraea | Hutchinsia | 1997 Avon Gorge |
| Hornungia petraea | Hutchinsia | 1997 Derbyshire and Cheshire |
| Hottonia palustris | Water Violet | 1997 Maidenhead |
| Huperzia selago | Fir Club-moss | 1997 Llandudno and Cwm Idwal |
| Hydorcharis morsus-ranae | Frogbit | 1997 Gordano Valley, Somerset |
| Hypochaeris maculatum | Spotted Cat's-ear | 1997 Llandudno /Cwm Idwal |
| Hypochoeris glabra | Smooth Catsear | 1997 Morayshire |
| Hypochoeris glabra | Smooth Cat's-ear | 1997 East Head West Sussex |
| Impatiens capensis | Orange Balsam | 1997 Surrey |
| Impatiens glandulifera | Himalayan Balsam | 1997 Surrey |
| Impatiens parviflora | Small Balsam | 1997 Surrey |
| Isoetes lacustris | Quillwort | 1997 Llandudno /Cwm Idwal |
| Juglans regia | Walnut | 1997 Cheshire/Derbys border |
| Juncus balticus | Baltic Rush | 1997 Morayshire |
| Juncus balticus | Baltic Rush | 1997 Lancashire |
| Juncus balticus x inflexus | Hybrid Rush | 1997 Lancashire |
| Juncus biglumis | Two-flowered Rush | 1997 Ben Lawers |
| Juncus trifidus | Three-flowered Rush | 1997 Ben Lawers |
| Kniphofia praecox | Greater Red-hot Poker | 1997 Llandudno /Cwm Idwal |
| Kobresia simpliciuscula | False Sedge | 1997 Ben Lawers |
| Lactuca tartarica | Blue Lettuce | 1997 Llandudno /Cwm Idwal |
| Lamiastrum galeobdolon | Yellow Archangel | 1997 Avon Gorge |
| Lamium confertum | Northern Deadnettle | 1997 Morayshire |
| Lapsana communis ssp. intermedia | Nipplewort | 1997 Llandudno and Cwm Idwal |
| Larix kaempferi | Larch | 1997 Ben Lawers |
| Lathraea squamaria | Toothwort | 1997 Avon Gorge |
| Lathyrus aphaca | Yellow Vetchling | 1997 Dartford Heath |
| Lathyrus tuberosus | Tuberous Pea | 1997 Lancashire |
| Laurus nobilis | Bay | 1997 Avon Gorge |
| Leonurus cardiaca | Motherwort | 1997 Ben Lawers |
| Leymus arenarius | Lyme Grass | 1997 Llandudno /Cwm Idwal |
| Ligusticum scoticum | Scots Lovage | 1997 Morayshire |
| Lilium Martagon | Martagon Lily | 1997 North York Moors |
| Linnaea borealis | Twinflower | 1997 Morayshire |
| Listera cordata | Lesser Twayblade | 1997 Morayshire |
| Lloydia serotina | Snowdon Lily | 1997 Llandudno /Cwm Idwal |
| Lobelia dortmanna | Water Lobelia | 1997 Llandudno /Cwm Idwal |
| Lycopodiella inundata | Marsh Clubmoss | 1997 Morayshire |
| Lycopodium clavatum | Stag's-horn Club-moss | 1997 Llandudno /Cwm Idwal |
| Lysimachia (x) thrysiflora | Tufted Loosestrife | 1997 North York Moors |
| Lysimachia ciliate | Fringed Loosestrife | 1997 Ben Lawers |
| Lythrum portula | Water Purslane | 1997 Devon |
| Matteucia struthiopteris | Ostrich Fern | 1997 Ston Easton Somerset |
| Medicago sativa ssp. sativa | Lucerne | 1997 Dartford Heath |
| Medicago sativa ssp. varia | Sand Lucerne | 1997 Dartford Heath |
| Melampyrum pratense | Common Cow-wheat | 1997 Ben Lawers |
| Melampyrum sylvaticum | Small Cow-wheat | 1997 Ben Lawers |
| Mertensia maritima | Oyster Plant | 1997 Morayshire |
| Minuartia verna | Spring Sandwort | 1997 Llandudno /Cwm Idwal |
| Moneses uniflora | One-flowered Wintergreen | 1997 Morayshire |
| Monotropa hypopitys | Yellow Bird's-nest. | 1997 Lancashire |
| Myosotis alpestris | Alpine Forget-me-not | 1997 Ben Lawers |
| Myosotis stolonifera | Pale Forget-me-not | 1997 North York Moors |
| Myrica gale | Bog Myrtle | 1997 North York Moors |
| Myriophyllum spp. | Water-milfoils | 1997 Gordano Valley, Somerset |
| Narcissus medioluteus | Primrose Peerless | 1997 Selbourne |
| Nectaroscordum siculum | Honey Garlic | 1997 Avon Gorge |
| Neottia nidus-avis | Bird's-nest Orchid | 1997 Morayshire |
| Nepeta cataria | Cat-mint | 1997 Surrey |
| Nuphar advena | Spatter dock | 1997 Morayshire |
| Oenothera biennis | Common Evening Primrose | 1997 Lancashire |
| Oenothera fallax | Intermediate Evening-primrose | 1997 Lancashire |
| Oenothera glazioviana | Large-flowered Evening-primrose | 1997 Lancashire |
| Olearia macrodonta | Daisy Bush | 1997 Llandudno /Cwm Idwal |
| Ononis spinosa x repens | Hybrid Restharrow | 1997 Derbyshire and Cheshire |
| Ornithogalum nutans | Drooping Star of Bethlehem | 1997 Selbourne |
| Ornithogalum pyrenaicum | Bath Asparagus | 1997 East Head West Sussex |
| Ornithopus perpusillus | Bird's-foot | 1997 Derbyshire and Cheshire |
| Orobanche hederae | Ivy Broomrape | 1997 Llandudno /Cwm Idwal |
| Orthillia secunda | Serrated Wintergreen | 1997 Morayshire |
| Oxyria digyna | Mountain Sorrel | 1997 Llandudno /Cwm Idwal |
| Oxytropis halleri | Purple Oxytropis | 1997 Ben Lawers |
| Papaver dubium ssp. dubium | Long-headed Poppy | 1997 Morayshire |
| Parnassia palustris var. condensata | Grass-of-Parnassus | 1997 Lancashire |
| Persicaria campanulata | Lesser Knotweed | 1997 Derbyshire and Cheshire |
| Persicaria lapathifolium | Pale Persicaria | 1997 Derbyshire and Cheshire |
| Phegopteris connectilis | Beech Fern | 1997 Ogden reservoir W. Yorks |
| Phegopteris connectilis | Beech Fern | 1997 Llandudno /Cwm Idwal |
| Phyllitis scolopendrium | Hart's-tongue Fern | 1997 Avon Gorge |
| Picea sichensis | Sitka Spruce | 1997 Ben Lawers |
| Pinguicula vulgaris | Common Butterwort | 1997 Llandudno /Cwm Idwal |
| Pinguicula vulgaris | Common Butterwort | 1997 North York Moors |
| Pinguicula vulgaris | Common Butterwort | 1997 North York Moors |
| Poa alpina | Alpine Meadow-grass | 1997 Ben Lawers |
| Poa chaixii | Broad-leaved Meadow-grass | 1997 Morayshire |
| Polemonium caeruleum | Jacob's Ladder | 1997 Derbyshire and Cheshire |
| Polygonatum multiflorum | Solomon's Seal | 1997 Ston Easton Somerset |
| Polygonatum verticillatum | Whorled Solomon's Seal | 1997 Ben Lawers |
| Polypodium interjectum | Intermediate Polypody | 1997 Avon Gorge |
| Polystichum setiferum | Soft Shield-fern | 1997 Avon Gorge |
| Potamogeton filiformis | Slender-leaved Pondweed | 1997 Morayshire |
| Potamogeton x suecicus | Swedish Pondweed | 1997 Morayshire |
| Potentilla neumanniana | Spring Cinquefoil | 1997 Llandudno /Cwm Idwal |
| Potentilla neumanniana | Spring Cinquefoil | 1997 Avon Gorge |
| Potentilla palustris | Marsh Cinquefoil | 1997 North York Moors |
| Potentilla recta | Sulphur Cinquefoil | 1997 Lancashire |
| Primula farinosa | Bird's-eye Primrose | 1997 North York Moors |
| Puccinellia distans ssp. borealis | Northern Saltmarsh Grass | 1997 Morayshire |
| Pyracantha coccinea | Firethorn | 1997 Llandudno /Cwm Idwal |
| Pyrola media | Intermediate Wintergreen | 1997 North York Moors |
| Pyrola minor | Common Wintergreen | 1997 Morayshire |
| Pyrola minor | Common Wintergreen | 1997 Ben Lawers |
| Pyrola minor | Common Wintergreen | 1997 North York Moors |
| Quercus ilex | Holm Oak | 1997 Avon Gorge |
| Radiola linoides | Allseed | 1997 Morayshire |
| Ranunculus lingua | Greater Spearwort | 1997 Lancashire |
| Ranunculus omiophyllus | Round-leaved Water Crowfoot | 1997 Llandudno /Cwm Idwal |
| Rapistrum rugosum | Bastard Cabbage | 1997 Llandudno /Cwm Idwal |
| Reseda alba | White Mignonette | 1997 Llandudno /Cwm Idwal |
| Ribes alpinum | Mountain Currant | 1997 North York Moors |
| Rorippa x armoracioides (R. sylvestris x austriaca) | Hybrid Yellow-cress | 1997 Derbyshire and Cheshire |
| Rosa mollis | Downy Rose | 1997 North York Moors |
| Rosa pimpinellifolia | Burnet Rose | 1997 Llandudno and Cwm Idwal |
| Rosa x verticillacantha | Hybrid Rose | 1997 Cheshire/Derbys border |
| Rubus chamaemorus | Cloudberry | 1997 Ben Lawers |
| Rubus distractiformis | Bramble | 1997 Cheshire/Derbys border |
| Rubus hylocharis | Bramble | 1997 Cheshire/Derbys border |
| Rubus tricolor | Bramble | 1997 Ogden reservoir W. Yorks |
| Rubus tricolor | Bramble | 1997 Derbyshire and Cheshire |
| Rubus warrenii | Bramble | 1997 Cheshire/Derbys border |
| Rubus wirralensis | Bramble | 1997 Cheshire/Derbys border |
| Rumex longifolius | Northern Dock | 1997 Morayshire |
| Rumex patientia | Patience Dock | 1997 Dartford Heath |
| Ruppia maritima | Beaked Tasselweed | 1997 Morayshire |
| Sagina nivalis | Snow Pearlwort | 1997 Ben Lawers |
| Sagina saginoides | Alpine Pearlwort | 1997 Ben Lawers |
| Sagittaria latifolia | Duck Potato | 1997 Surrey |
| Sagittaria sagittifolia | Arrowhead | 1997 Surrey |
| Salix arbuscula | Mountain Willow | 1997 Ben Lawers |
| Salix babylonica "Tortuosa" | Corkscrew Willow | 1997 Ogden reservoir W. Yorks |
| Salix cinerea x myrsinifolia | Hybrid Willow | 1997 North York Moors |
| Salix lapponum | Downy Willow | 1997 Ben Lawers |
| Salix lapponum | Downy Willow | 1997 Ben Lawers |
| Salix myrsinifolia | Dark-leaved Willow | 1997 Ben Lawers |
| Salix reticulata | Net-leaved Willow | 1997 Ben Lawers |
| Salix x doniana S. repens x S. purpurea | Hybrid Willow | 1997 Lancashire |
| Salsola kali | Prickly Saltwort | 1997 Lancashire |
| Salvia verbenaca | Wild Clary | 1997 Avon Gorge |
| Sambucus racemosa | Red-berried Elder | 1997 Ston Easton Somerset |
| Sanicula europaea | Sanicle | 1997 Avon Gorge |
| Sanicula europaea | Sanicle | 1997 Ben Lawers |
| Saxifraga aizoides | Yellow Mountain Saxifrage | 1997 Ben Lawers |
| Saxifraga cespitosa | Tufted Saxifrage | 1997 Llandudno /Cwm Idwal |
| Saxifraga cuneifolia | Lesser London Pride | 1997 Derbyshire and Cheshire |
| Saxifraga hypnoides | Mossy Saxifrage | 1997 Llandudno /Cwm Idwal |
| Saxifraga nivalis | Alpine Saxifrage | 1997 Llandudno /Cwm Idwal |
| Saxifraga oppositifolia | Purple Saxifrage | 1997 Llandudno /Cwm Idwal |
| Saxifraga stellaris | Starry Saxifrage | 1997 Llandudno /Cwm Idwal |
| Saxifraga x polita | Hybrid Saxifrage | 1997 Derbyshire and Cheshire |
| Schoenoplectus pungens | Sharp Club-rush | 1997 Lancashire |
| Schoenus ferrugineus | Brown Bog-rush | 1997 Ben Lawers |
| Schoenus nigricans | Black Bog-rush | 1997 North York Moors |
| Scirpus setaceus | Bristle Clubrush | 1997 North York Moors |
| Scirpus sylvaticus | Wood Clubrush | 1997 Devon |
| Scirpus sylvaticus | Wood Clubrush | 1997 North York Moors |
| Scleranthus annuus | Annual Knawel | 1997 Dartford Heath |
| Scrophularia vernalis | Yellow Figwort | 1997 Llandudno /Cwm Idwal |
| Sedum dasyphyllum | Thick-leaved Stonecrop | 1997 Llandudno /Cwm Idwal |
| Sedum rosea | Roseroot | 1997 Llandudno /Cwm Idwal |
| Sedum telephium | Orpine | 1997 Devon |
| Serratula tinctoria | Saw-wort | 1997 North York Moors |
| Sibbaldia procumbens | Sibbaldia | 1997 Ben Lawers |
| Silaum silaus | Pepper Saxifrage | 1997 North York Moors |
| Silene acaulis | Moss Campion | 1997 Llandudno /Cwm Idwal |
| Silene nutans | Nottingham Catchfly | 1997 Llandudno /Cwm Idwal |
| Silene nutans | Nottingham Catchfly | 1997 Derbyshire and Cheshire |
| Sinapis alba | White Mustard | 1997 Llandudno /Cwm Idwal |
| Sisymbrium altissimum | Tall Rocket | 1997 Dartford Heath |
| Sisymbrium officinale | Hedge Mustard | 1997 Dartford Heath |
| Sisymbrium orientale | Eastern Rocket | 1997 Dartford Heath |
| Sisymbrium volgense | Russian Mustard | 1997 Derbyshire and Cheshire |
| Smyrnium olustrum | Alexanders | 1997 Avon Gorge |
| Sorbus anglica | a rare Whitebeam | 1997 Avon Gorge |
| Sorbus intermedia | Swedish Whitebeam | 1997 Llandudno /Cwm Idwal |
| Stachys officinalis | Betony | 1997 North York Moors |
| Staphylea pinnata | Bladdernut | 1997 Ston Easton Somerset |
| Stellaria nemorum | Wood Stitchwort | 1997 Ben Lawers |
| Stratiotes aloides | Water Solider | 1997 Maidenhead |
| Subularia aquatica | Awlwort | 1997 Llandudno and Cwm Idwal |
| Succisa pratensis | Devil's-bit Scabious | 1997 Gordano Valley, Somerset |
| Tellima grandiflora | Fringe-cups | 1997 Avon Gorge |
| Tellima grandiflora | Fringe-cups | 1997 Derbyshire and Cheshire |
| Thalictrum flavum | Common Meadow-rue | 1997 Lancashire |
| Tilia cordata | Small-leaved Lime | 1997 Avon Gorge |
| Tofieldia pusilla | Scottish Asphodel | 1997 Ben Lawers |
| Trachystemon orientalis | Abraham Isaac and Jacob | 1997 North York Moors |
| Tragopogon pratensis x T. porrifolius | Hybrid Goat's-beard | 1997 Dartford Heath |
| Trientalis europaea | Chickweed Wintergreen | 1997 North York Moors |
| Trifolium aureum | Golden Trefoil | 1997 Derbyshire and Cheshire |
| Trifolium striatum | Knotted Clover | 1997 Morayshire |
| Trinia glauca | Honewort | 1997 Avon Gorge |
| Trollius europaeus | Globeflower | 1997 Llandudno /Cwm Idwal |
| Trollius europaeus | Globeflower | 1997 North York Moors |
| Typha x glauca | Hybrid Reedmace | 1997 Morayshire |
| Typha x glauca | Hybrid Reedmace | 1997 Lancashire |
| Valeriana pyrenaica | Pyrenean Valerian | 1997 Derbyshire and Cheshire |
| Valerianella carinata | Keeled-fruited Cornsalad | 1997 Llandudno /Cwm Idwal |
| Verbascum densiflorum | Dense-flowered Mullein | 1997 Surrey |
| Verbascum densiflorum | Dense-flowered Mullein | 1997 Lancashire |
| Verbascum lychnitis | White Mullein | 1997 Dartford Heath |
| Verbascum phlomoides | Orange Mullein | 1997 Lancashire |
| Veronica austriaca | Large Speedwell | 1997 Lancashire |
| Veronica longifolia | Garden Speedwell | 1997 Lancashire |
| Veronica spicata ssp. hybrida | Western Spiked Speedwell | 1997 Llandudno /Cwm Idwal |
| Viburnum lantana | Wayfaring Tree | 1997 Avon Gorge |
| Vicia bithynica | Bithynian Vetch | 1997 North York Moors |
| Vicia villosa | Fodder Vetch | 1997 Dartford Heath |