Oxfordshire Rare Plant Register, all species studied, in alphabetical order, 28 April 2015 National Status Oxfordshire status (not complete) Latin name English name (not vice-county) Least Concern Adiantum capillus-veneris Maidenhair Fern RPR Endangered Adonis annua Pheasant’s-eye RPR Waiting List Aethusa cynapium ssp. agrestis Fool's Parsley Not studied Waiting List Agrostemma githago Corn Cockle Introd since 1992 Least Concern Agrostis canina Velvet Bent RPR Least Concern Agrostis curtisii Bristle Bent RPR Least Concern Agrostis vinealis Brown Bent RPR Least Concern Aira caryophyllea Silver Hair-grass RPR Least Concern Aira praecox Early Hair-grass RPR Least Concern Alchemilla filicaulis Hairy Lady’s-mantle RPR Least Concern Alchemilla xanthochlora Pale Lady's-mantle Last in 1988 Least Concern Alisma lanceolatum Narrow-leaved Water-plantain RPR Least Concern Alopecurus aequalis Orange Foxtail RPR Vulnerable Anacamptis morio Green-winged Orchid RPR Data Deficient Anagallis foemina Blue Pimpernel RPR Least Concern Anagallis tenella Bog Pimpernel RPR Introduced since 1500 Anisantha madritensis Compact Brome Introduced Endangered Anthemis arvensis Corn Chamomile RPR Vulnerable Anthemis cotula Stinking Chamomile Not studied Least Concern Anthriscus caucalis Bur Chervil RPR Introduced since 1500 Apera interrupta Dense Silky-bent RPR Least Concern Apera spica-venti Loose Silky-bent RPR Least Concern Aphanes australis Slender Parsley-piert RPR Least Concern Apium graveolens Wild Celery RPR Vulnerable Apium inundatum Lesser Marshwort RPR Europe Protected Apium repens Creeping Marshwort RPR Least Concern Aquilegia vulgaris Columbine Not Scarce Near Threatened Arabis hirsuta Hairy Rock-cress RPR Introduced since 1500 Aristolochia clematitis Birthwort RPR Iconic Extinct in the Wild Arnoseris minima Lamb's Succory Last in 1971 Least Concern Artemisia absinthium Wormwood RPR Least Concern Arum italicum ssp. italicum Italian Lords and Ladies Introduced Least Concern Asperula cynanchia Squinancywort Not Scarce Endangered Astragalus danicus Purple Milk-vetch RPR Least Concern Avenula pratensis Meadow Oat-grass Not Scarce Vulnerable Baldellia ranunculoides Lesser Water-plantain RPR Least Concern Berberis vulgaris Barberry RPR Least Concern Bidens cernua Nodding Bur-marigold RPR Least Concern Blechnum spicant Hard-fern RPR Vulnerable Blysmus compressus Flat-sedge RPR Least Concern Bolboschoenus maritimus Sea Club-rush RPR Near Threatened Briza media Quaking Grass Not studied Least Concern Bromopsis benekenii Lesser Hairy-brome Last in 1992 Extinct in the Wild Bromus interruptus Interrupted Brome Last in 1931 Least Concern Bromus racemosus Smooth Brome Not Scarce Near Threatened Bromus secalinus Rye Brome RPR Critically Endangered Bupleurum rotundifolium Thorow-wax Last in 1979 Least Concern Butomus umbellatus Flowering Rush Not Scarce Least Concern Calamagrostis canescens Purple Small-reed RPR Least Concern Calamagrostis epigejos Wood Small-reed Not Scarce Least Concern Callitriche brutia Intermediate Water-starwort RPR Least Concern Callitriche obtusangula Blunt-fruited Water-starwort RPR Near Threatened Calluna vulgaris Heather RPR Least Concern Campanula latifolia Giant Bellflower RPR Endangered Campanula rapunculus Rampion Bellflower RPR Near Threatened Campanula rotundifolia Harebell Not studied Least Concern Cardamine amara Large Bitter-cress Not Scarce Least Concern Carduus tenuiflorus Slender Thistle RPR Least Concern Carex binervis Green-ribbed Sedge RPR Least Concern Carex caryophyllea Spring-sedge Not Scarce Least Concern Carex demissa Common Yellow-sedge RPR Least Concern Carex dioica Dioecious Sedge RPR Least Concern Carex distans Distant Sedge RPR Least Concern Carex divulsa ssp. divulsa Grey Sedge Not Scarce Least Concern Carex divulsa ssp. leersii Leers' Sedge RPR Near Threatened Carex echinata Star Sedge RPR Near Threatened Carex elata Tufted-sedge RPR Nationally Rare Carex filiformis Downy-fruited Sedge RPR Least Concern Carex hostiana Tawny Sedge RPR Least Concern Carex lepidocarpa Long-stalked Yellow-sedge RPR Least Concern Carex leporina Oval Sedge Not Scarce Near Threatened Carex muricata ssp. muricata Prickly Sedge RPR Least Concern Carex muricata ssp. pairae Prickly Sedge Not Scarce Least Concern Carex oederi Small-fruited Yellow-sedge RPR Least Concern Carex pallescens Pale Sedge RPR Least Concern Carex paniculata Greater Tussock-sedge Not Scarce Least Concern Carex pilulifera Pill Sedge Not Scarce Least Concern Carex pseudocyperus Cyperus Sedge Not Scarce Near Threatened Carex pulicaris Flea Sedge RPR Least Concern Carex rostrata Bottle Sedge RPR Least Concern Carex strigosa Thin-spiked Wood-sedge RPR Vulnerable Carex vesicaria Bladder-sedge RPR Vulnerable Carex vulpina True Fox-sedge RPR Near Threatened Carlina vulgaris Carline Thistle RPR Critically Endangered Carum carvi Caraway Last in 1987 Vulnerable Catabrosa aquatica Water Whorl-grass RPR Least Concern Centaurea cyanus Cornflower RPR Least Concern Centaurium pulchellum Lesser Centaury RPR Endangered Centunculus minimus Chaff-weed Last in 1983 Vulnerable Cephalanthera damasonium White Helleborine RPR Endangered Cephalanthera longifolia Narrow-leaved Helleborine Last in 1970 Near Threatened Cerastium arvense Field Mouse-ear Not studied Least Concern Cerastium diffusum Sea Mouse-ear Last in 1995 Least Concern Cerastium pumilum Dwarf Mouse-ear RPR Least Concern Cerastium semidecandrum Little Mouse-ear Not Scarce Least Concern Ceratocapnos claviculata Climbing Corydalis RPR Least Concern Ceratophyllum demersum Rigid Hornwort Not Scarce Vulnerable Chamaemelum nobile Chamomile Last in 1983 Vulnerable Chenopodium bonus-henricus Good-King-Henry RPR Least Concern Chenopodium ficifolium Fig-leaved Goosefoot RPR Least Concern Chenopodium hybridum Maple-leaved Goosefoot RPR Endangered Chenopodium murale Nettle-leaved Goosefoot Last in 1985 Critically Endangered Chenopodium urbicum Upright Goosefoot Last in 1912 Endangered Chenopodium vulvaria Stinking Goosefoot Last in 1927 Least Concern Chrysosplenium alternifolium Alternate-leaved Golden-saxifrage RPR Least Concern Chrysosplenium oppositifolium Opposite-leaved Golden-saxifrage Not Scarce Vulnerable Cichorium intybus Chicory Not studied Least Concern Cirsium dissectum Meadow Thistle RPR Least Concern Cladium mariscus Great Fen-sedge Last in 1988 Vulnerable Clinopodium acinos Basil Thyme RPR Least Concern Clinopodium ascendens Common Calamint Not Scarce Least Concern Clinopodium calamintha Lesser Calamint RPR Vulnerable Coeloglossum viride Frog Orchid RPR Least Concern Colchicum autumnale Autumn Crocus/Meadow Saffron RPR GB Near Threatened Least Concern Comarum palustre Marsh Cinquefoil Introduced Least Concern Convallaria majalis Lily-of-the-valley Introduced Near Threatened Cruciata laevipes Crosswort Not studied Vulnerable Cuscuta epithymum Dodder RPR Least Concern Cuscuta europaea Greater Dodder RPR Near Threatened Cynoglossum germanicum Green Hound's-tongue RPR Near Threatened Cynoglossum officinale Hound's-tongue RPR Least Concern Cyperus longus Galingale Introduced Least Concern Cystopteris fragilis Brittle Bladder-fern Last in 1995 Least Concern Dactylorhiza incarnata Early Marsh-orchid Not Scarce Least Concern Dactylorhiza maculata Heath-spotted Orchid Not Scarce Least Concern Dactylorhiza purpurella Northern Marsh-orchid 2 records 1981 Least Concern Dactylorhiza traunsteinerioides Narrow-leaved Marsh-orchid RPR Least Concern Danthonia decumbens Heath-grass Not Scarce Vulnerable Daphne mezereum Mezereon RPR Introduced since 1500 Datura stramonium Thorn-apple Introduced Least Concern Descurainia sophia Flixweed RPR Endangered Dianthus armeria Deptford Pink Last in 1981 Vulnerable Dianthus deltoides Maiden Pink RPR Least Concern Diplotaxis tenuifolia Perennial Wall-rocket RPR Least Concern Dipsacus pilosus Small Teasel RPR Least Concern Draba muralis Wall Whitlowgrass Last in 1996 Least Concern Drosera rotundifolia Round-leaved Sundew RPR Least Concern Dryopteris affinis Golden-scaled Male-fern Not Scarce Least Concern Dryopteris carthusiana Narrow-leaved Buckler-fern Not Scarce Least Concern Echium vulgare Viper's-bugloss Not Scarce Near Threatened Eleocharis acicularis Needle Spike-rush Last in 1979 Least Concern Eleocharis multicaulis Many-stalked Spike-rush Last in 1968 Least Concern Eleocharis quinqueflora Few-flowered Spike-rush RPR Least Concern Eleocharis uniglumis Slender Spike-rush RPR Least Concern Eleogiton fluitans Floating Club-rush last in 1980s Least Concern Epilobium lanceolatum Spear-leaved Willowherb Last in 1995 Least Concern Epilobium palustre Marsh Willowherb RPR Least Concern Epilobium roseum Pale Willowherb RPR Least Concern Epipactis leptochila Narrow-lipped Helleborine RPR Near Threatened Epipactis palustris Marsh Helleborine RPR Least Concern Epipactis phyllanthes Green-flowered Helleborine RPR Least Concern Epipactis purpurata Violet Helleborine Not Scarce Critically Endang Epipogium aphyllum Ghost Orchid Last in 1979 Least Concern Equisetum fluviatile Water Horsetail Not Scarce Least Concern Equisetum variegatum Variegated Horsetail RPR Near Threatened Erica cinerea Bell-heather RPR Near Threatened Erica tetralix Cross-leaved Heather RPR Vulnerable Eriophorum angustifolium Common Cottongrass RPR Least Concern Eriophorum latifolium Broad-leaved Cottongrass RPR Near Threatened Erysimum cheiranthoides Treacle-mustard Not studied Vulnerable Euphorbia exigua Dwarf Spurge RPR Least Concern Euphorbia platyphyllos Broad-leaved Spurge RPR Vulnerable Fallopia dumetorum Copse-bindweed RPR Least Concern Festuca filiformis Fine-leaved Sheep's-fescue RPR Introduced since 1500 Festuca heterophylla Various-leaved Fescue Introduced Near Threatened Filago minima Small Cudweed RPR Endangered Filago pyramidata Broad-leaved Cudweed RPR Near Threatened Filago vulgaris Common Cudweed RPR Near Threatened Fragaria vesca Wild Strawberry Not studied Least Concern Frangula alnus Alder Buckthorn RPR Nationally Scarce Fritillaria meleagris Snake's-head Fritillary RPR Least Concern Fumaria bastardii Tall Ramping-fumitory Last in 1978 Least Concern Fumaria capreolata White Ramping-fumitory RPR Least Concern Fumaria densiflora Dense-flowered Fumitory Not Scarce Least Concern Fumaria muralis Common Ramping-fumitory RPR Near Threatened Fumaria parviflora Fine-leaved Fumitory Last in 1992 Least Concern Fumaria purpurea Purple Ramping-fumitory Last in 1971 Endangered Fumaria vaillantii Few-flowered Fumitory RPR Least Concern Gagea lutea Yellow Star-of-Bethlehem RPR Critically Endangered Galeopsis angustifolia Red Hemp-nettle RPR Least Concern Galeopsis bifida Bifid Hemp-nettle RPR Vulnerable Galeopsis speciosa Large-flowered Hempnettle Last in 1984 Endangered Galium pumilum Slender Bedstraw RPR Critically Endangered Galium tricornutum Corn Cleavers Extinct Re-introduced Vulnerable Genista anglica Petty Whin Unconfirmed Vulnerable Genista tinctoria Dyer’s Greenweed RPR Near Threatened Gentianella amarella Autumn Gentian Not studied European Protected Species Gentianella anglica Early Gentian RPR Vulnerable Gentianella germanica Chiltern Gentian RPR Least Concern Geranium columbinum Long-stalked Crane'sbill Not Scarce Least Concern Geum rivale Water Avens RPR Vulnerable Glebionis segetum Corn Marigold RPR Least Concern Glyceria declinata Small Sweet-grass RPR Endangered Gnaphalium sylvaticum Heath Cudweed RPR Vulnerable Groenlandia densa Opposite-leaved Pondweed RPR Least Concern Gymnadenia conopsea Fragrant-orchid RPR Data Deficient Gymnadenia densiflora Marsh Fragrant-orchid RPR Least Concern Gymnocarpium robertianum Limestone Fern RPR Near Threatened Helianthemum nummularium Rock-rose Not studied Least Concern Helleborus foetidus Stinking Hellebore Not Scarce Least Concern Helleborus viridis Green Hellebore Not Scarce Least Concern Himantoglossum hircinum Lizard Orchid RPR Least Concern Hippocrepis comosa Horse-shoe Vetch Not Scarce Least Concern Hippuris vulgaris Mare's-tail Not Scarce Nationally Scarce Hordelymus europaeus Wood Barley RPR Vulnerable Hottonia palustris Water-violet RPR Vulnerable Hydrocharis morsus-ranae Frogbit RPR Near Threatened Hydrocotyle vulgaris Marsh Pennywort RPR Vulnerable Hyoscyamus niger Henbane RPR Least Concern Hypericum androsaemum Tutsan Not Scarce Least Concern Hypericum humifusum Trailing St John's-wort Not Scarce Least Concern Hypericum maculatum Imperforate St John's-wort Not Scarce Least Concern Hypericum montanum Pale St John’s-wort RPR Vulnerable Hypochaeris glabra Smooth Cat's-ear RPR Endangered Hypopitys monotropa Yellow Bird’s-nest RPR Vulnerable Iberis amara Wild Candytuft RPR Near Threatened Inula helenium Elecampane RPR Least Concern Isolepis setacea Bristle Club-rush Not Scarce Vulnerable Jasione montana Sheep's-bit Last in 1995 Least Concern Juncus acutiflorus Sharp-flowered rush Not Scarce Least Concern Juncus bulbosus Bulbous Rush RPR Vulnerable Juncus compressus Round-fruited Rush RPR Least Concern Juncus squarrosus Heath Rush RPR Least Concern Juncus subnodulosus Blunt-flowered Rush Not Scarce Near Threatened Juniperus communis Juniper RPR Near Threatened Knautia arvensis Field Scabious Not studied Least Concern Lactuca virosa Prickly Lettuce Not Scarce Least Concern Lathraea squamaria Toothwort Not Scarce Vulnerable Lathyrus aphaca Yellow Vetchling Last in 1988 Near Threatened Lathyrus linifolius Bitter-vetch RPR Least Concern Lathyrus nissolia Grass-vetchling Not Scarce Least Concern Lathyrus sylvestris Narrow-leaved Everlasting-pea Not Scarce Least Concern Lemna gibba Fat Duckweed RPR Least Concern Lemna trisulca Ivy-leaved Duckweed Not Scarce Near Threatened Lepidium campestre Field Pepperwort Not studied Least Concern Lepidium heterophyllum Smith’s Pepperwort Last in 1983 Least Concern Lepidium latifolium Dittander Last in 1997 Least Concern Lepidium ruderale Narrow-leaved Pepperwort RPR Nationally Scarce Leucojum aestivum Summer Snowflake RPR Least Concern Limosella aquatica Mudwort RPR Endangered Lithospermum arvense Corn Gromwell RPR Critically Endangered Lolium temulentum Darnel Last in 1977 Least Concern Lotus tenuis Narrow-leaved Bird's-foot-trefoil RPR Least Concern Luzula multiflora Heath Wood-rush Not Scarce Least Concern Luzula sylvatica Great Wood-rush RPR Least Concern Lycopodium clavatum Stag's-horn Clubmoss Last in 1977 Least Concern Lysimachia vulgaris Yellow Loosestrife Not Scarce Endangered Lythrum hyssopifolium Grass-poly RPR Least Concern Lythrum portula Water-purslane RPR Least Concern Marrubium vulgare White Horehound Last in 1992 Least Concern Medicago polymorpha Toothed Medick RPR Least Concern Medicago sativa ssp. falcata Sickle Medick RPR Least Concern Melampyrum pratense Common Cow-wheat RPR Near Threatened Mentha arvensis Corn Mint Not studied Critically Endangered Mentha pulegium Pennyroyal RPR Least Concern Menyanthes trifoliata Bog-bean RPR Least Concern Mespilus germanica Medlar Introduced Vulnerable Microthlaspi perfoliatum Perfoliate Penny-cress RPR Endangered Minuartia hybrida Fine-leaved Sandwort Last in 1997 Vulnerable Misopates orontium Weasel’s-snout RPR Vulnerable Moenchia erecta Upright Chickweed RPR Least Concern Molinia caerulea Purple Moor-grass RPR Least Concern Montia fontana Blinks RPR Waiting List Muscari neglectum Grape-hyacinth RPR Least Concern Myosotis secunda Creeping Forget-me-not unconfirmed Vulnerable Myosurus minimus Mousetail RPR Least Concern Myriophyllum alternifolium Alternate Water-milfoil Last in 1978 Near Threatened NarcissusMyriophyllum pseudonarcissus verticillatum ssp. Whorled Water-milfoil RPR Least Concern pseudonarcissus Daffodil RPR Near Threatened Nardus stricta Mat-grass Last in 1988 Endangered Neotinea ustulata Burnt Orchid RPR Vulnerable Neottia nidus-avis Bird’s-nest Orchid RPR Vulnerable Nepeta cataria Cat-mint RPR Least Concern Nymphoides peltata Fringed Water-lily RPR Least Concern Oenanthe aquatica Fine-leaved Water-dropwort RPR Least Concern Oenanthe crocata Hemlock Water-dropwort Not Scarce Vulnerable Oenanthe fistulosa Tubular Water-dropwort RPR Least Concern Oenanthe fluviatilis River Water-dropwort RPR Near Threatened Oenanthe lachenalii Parsley Water-dropwort RPR Least Concern Oenanthe silaifolia Narrow-leaved Water-dropwort RPR Vulnerable Onobrychis viciifolia Sainfoin RPR Near Threatened Ononis spinosa Spiny Restharrow RPR Vulnerable Ophrys insectifera Fly Orchid RPR Nationally Rare Ophrys sphegodes Early Spider-orchid Last in 1975 Endangered Orchis anthropophorum Man Orchid RPR Least Concern Orchis mascula Early-purple Orchid Not Scarce Vulnerable Orchis militaris Military Orchid RPR Vulnerable Orchis purpurea Lady Orchid RPR Vulnerable Orchis simia Monkey Orchid RPR Least Concern Oreopteris limbosperma Lemon-scented Fern RPR Least Concern Ornithopus perpusillus Bird’s-foot RPR Least Concern Orobanche elatior Greater Broomrape Not Scarce Least Concern Orobanche hederae Ivy-broomrape RPR Near Threatened Oxalis acetosella Wood-sorrel Not studied Endangered Papaver argemone Prickly Poppy RPR Least Concern Papaver hybridum Rough Poppy RPR Least Concern Parentucellia viscosa Yellow Bartsia Introduced Least Concern Paris quadrifolia Herb Paris Not Scarce Vulnerable Parnassia palustris Grass-of-Parnassus RPR Vulnerable Pedicularis palustris Marsh Lousewort RPR Vulnerable Pedicularis sylvatica Lousewort RPR Least Concern Persicaria bistorta Bistort Introduced Least Concern Persicaria minor Small Water-pepper Last pre-1990 Vulnerable Persicaria mitis Tasteless Water-pepper RPR Least Concern Petroselinum segetum Corn Parsley Not Scarce Vulnerable Pilularia globulifera Pillwort Last in 1979 Least Concern Pimpinella major Greater Burnet-saxifrage RPR Vulnerable Pinguicula vulgaris Common Butterwort RPR Least Concern Plantago coronopus Stag's-horn Plantain Not Scarce Near Threatened Plantago media Hoary Plantain Not studied Endangered Platanthera bifolia Lesser Butterfly-orchid RPR Least Concern Platanthera chlorantha Greater Butterfly-orchid Not Scarce Least Concern Poa angustifolia Narrow-leaved Meadow-grass RPR Least Concern Poa humilis Spreading Meadow-grass RPR Least Concern Poa infirma Early Meadow-grass RPR Least Concern Polygala calcarea Chalk Milkwort RPR Near Threatened Polygala serpyllifolia Heath Milkwort RPR Least Concern Polygonatum multiflorum Solomon’s-seal Introduced Least Concern Polygonum rurivagum Cornfield Knotgrass RPR Least Concern Polypodium interjectum Intermediate Polypody RPR Nationally Scarce Polypogon monspeliensis Annual Beard-grass Introduced Least Concern Polystichum aculeatum Hard Shield-fern Not Scarce Least Concern Polystichum setiferum Soft Shield-fern Not Scarce Nationally Scarce Potamogeton coloratus Fen Pondweed RPR Endangered Potamogeton compressus Grass-wrack Pondweed Last in 1980 Least Concern Potamogeton friesii Flat-stalked Pondweed Last in 1975 Least Concern Potamogeton lucens Shining Pondweed RPR Least Concern Potamogeton obtusifolius Blunt-leaved Pondweed Last in 1970s Least Concern Potamogeton perfoliatus Perfoliate Pondweed Not Scarce Least Concern Potamogeton polygonifolius Bog Pondweed Last in 1979 Endangered Potamogeton praelongus Long-stalked Pondweed Last in 1970s Least Concern Potamogeton pusillus Lesser Pondweed RPR Least Concern Potamogeton trichoides Thread-leaved Pondweed RPR Least Concern Potentilla anglica Trailing Tormentil RPR Near Threatened Potentilla argentea Hoary Cinquefoil RPR Near Threatened Potentilla erecta Tormentil Not studied Introduced since 1500 Prunella laciniata Cut-leaved Self-heal Introduced Near Threatened Prunus cerasus Dwarf Cherry RPR Vulnerable Pulsatilla vulgaris Pasqueflower RPR Near Threatened Pyrola minor Wintergreen Last in 1968 Introduced since 1500 Pyrus pyraster Wild Pear RPR Vulnerable Radiola linoides Allseed Last in 1881 Endangered Ranunculus arvensis Corn Buttercup RPR Least Concern Ranunculus circinatus Fan-leaved Water-crowfoot RPR Vulnerable Ranunculus flammula Lesser Spearwort Not studied Least Concern Ranunculus fluitans River Water-crowfoot RPR Least Concern Ranunculus hederaceus Ivy-leaved Crowfoot RPR Least Concern Ranunculus lingua Greater Spearwort RPR Least Concern Ranunculus omiophyllus Round-leaved Crowfoot Last in 1970s Least Concern Ranunculus parviflorus Small-flowered Buttercup RPR Least Concern Ranunculus peltatus Pond Water-crowfoot RPR Least Concern Ranunculus sardous Hairy Buttercup RPR Least Concern Ranunculus trichophyllus Thread-leaved Water-crowfoot RPR Least Concern Rosa caesia Glaucous Dog-rose DD Least Concern Rosa micrantha Small-flowered Sweet-briar DD Least Concern Rosa obtusifolia Round-leaved Dog-rose DD Least Concern Rosa rubiginosa Sweet-briar Not scarce Least Concern Rosa sherardii Sherard’s Downy-rose DD Least Concern Rosa stylosa Short-styled Field-rose DD Least Concern Rosa tomentosa Harsh Downy-rose DD Least Concern Rumex maritimus Golden Dock Last in 1993 Least Concern Rumex palustris Marsh Dock RPR Least Concern Rumex pulcher Fiddle Dock Not Scarce Least Concern Sagina apetala Annual Pearlwort RPR Vulnerable Sagina nodosa Knotted Pearlwort Last in 1985 Least Concern Salix aurita Eared Willow RPR Least Concern Salix myrsinifolia Dark-leaved Willow RPR Near Threatened Salix repens Creeping Willow Last in 1995 Near Threatened Salvia pratensis Meadow Clary RPR Near Threatened Salvia verbenaca Wild Clary RPR Least Concern Sambucus ebulus Dwarf Elder RPR Least Concern Samolus valerandi Brookweed RPR Near Threatened Sanicula europaea Sanicle Not studied Least Concern Saxifraga granulata Meadow Saxifrage Not Scarce Endangered Scandix pecten-veneris Shepherd’s-needle RPR Least Concern Schoenoplectus tabernaemontani Grey Club-rush RPR Least Concern Schoenus nigricans Black Bog-rush RPR Least Concern Scirpus sylvaticus Wood Club-rush RPR Endangered Scleranthus annuus Annual Knawel RPR Least Concern Sedum telephium Orpine Not Scarce Near Threatened Senecio aquaticus Marsh Ragwort Not studied Introduced since 1500 Senecio sarracenius Broad-leaved Ragwort RPR Iconic Least Concern Senecio sylvaticus Heath Groundsel RPR Least Concern Serratula tinctoria Saw-wort RPR Endangered Silene conica Sand Catchfly RPR Near Threatened Silene flos-cuculi Ragged-robin Not studied Endangered Silene gallica Small-flowered Catchfly Last in 1968-90 Vulnerable Silene noctiflora Night-flowering Catchfly RPR Endangered Sium latifolium Greater Water-parsnip RPR Least Concern Smyrnium olusatrum Alexanders RPR Near Threatened Solidago virgaurea Goldenrod RPR Least Concern Sorbus torminalis Wild Service-tree Not Scarce Vulnerable Spergula arvensis Corn Spurrey RPR Least Concern Spergularia rubra Sand Spurrey RPR Near Threatened Spiranthes spiralis Autumn Lady’s-tresses RPR Least Concern Spirodela polyrhiza Greater Duckweed RPR Near Threatened Stachys arvensis Field Woundwort RPR Endangered Stachys germanica Downy Woundwort RPR Least Concern Stellaria pallida Lesser Chickweed RPR Vulnerable Stellaria palustris Marsh Stitchwort RPR Least Concern Stratiotes aloides Water soldier Introduced Near Threatened Succisa pratensis Devil's-bit Scabious Not studied Near Threatened Teesdalia nudicaulis Shepherd’s Cress RPR Vulnerable Tephroseris integrifolia Field Fleawort RPR Least Concern Thelypteris palustris Marsh Fern Last in 1965 Least Concern Thesium humifusum Bastard Toadflax RPR Least Concern Thymus pulegioides Large Thyme Not Scarce Least Concern Tilia cordata Small-leaved Lime RPR Endangered Torilis arvensis Spreading Hedge-parsley RPR Least Concern Torilis nodosa Knotted Hedge-parsley Not Scarce Least Concern Trifolium arvense Hare's-foot Clover RPR Vulnerable Trifolium fragiferum Strawberry clover RPR Vulnerable Trifolium ochroleucon Sulphur Clover Introduced Least Concern Trifolium scabrum Rough Clover RPR Least Concern Trifolium striatum Knotted Clover RPR Least Concern Trifolium subterraneum Subterranean Clover RPR Near Threatened Triglochin palustre Marsh Arrow-grass RPR Introduced since 1500 Tulipa sylvestris Wild Tulip RPR Iconic Endangered Turritis glabra Tower Mustard Last in 1981 Least Concern Typha angustifolia Lesser Bulrush Not Scarce Least Concern Ulex gallii Western Gorse RPR Least Concern Ulex minor Dwarf Gorse RPR Least Concern Ulmus plotii Plot's Elm Last in 1974 Least Concern Umbilicus rupestris Wall Pennywort RPR Least Concern Utricularia australis Bladderwort RPR Least Concern Utricularia vulgaris Greater Bladderwort RPR Near Threatened Valeriana dioica Marsh Valerian RPR Near Threatened Valeriana officinalis Common Valerian Not studied Least Concern Valerianella carinata Keel-fruited Cornsalad Not Scarce Endangered Valerianella dentata Narrow-fruited Cornsalad RPR Endangered Valerianella rimosa Broad-fruited Cornsalad RPR Near Threatened Veronica officinalis Heath Speedwell Not studied Introduced since 1500 Veronica praecox Breckland Speedwell RPR Near Threatened Veronica scutellata Marsh Speedwell RPR Least Concern Vicia lathyroides Spring Vetch RPR Least Concern Vicia lutea Yellow-vetch Introduced Vulnerable Vicia parviflora Slender Tare RPR Waiting list Vicia sativa ssp. nigra Narrow-leaved Vetch RPR Waiting list Vicia sativa ssp. sativa Common Vetch RPR Least Concern Vicia sylvatica Wood Vetch Last in 1988 Vulnerable Viola canina Heath Dog-violet RPR Least Concern Viola palustris Marsh Violet Last in 1965 Critically Endangered Viola persicifolia Fen Violet RPR Near Threatened Viola tricolor Wild Pansy RPR Least Concern Vulpia myuros Rat's-tail Fescue Not Scarce Great Britain Scarce Vulpia unilateralis Mat-grass Fescue RPR Least Concern Zannichellia palustris Horned Pondweed RPR