| TOTALS | Updated 31.12.2018 | John Saville @ Dec 2009 | ||
| Flowering Plants 420 | ||||
| Trees 85 | ||||
| Grasses 59 | ||||
| 2018 additions in red | ||||
| Status Key C – Common and abundant; L – Localised but not scarce; R – Rare , single plants or small numbers | ||||
| r.o.c – “relic of cultivation” ; (escape) denotes presumed garden plants S – self seeded/discarded; P – planted/cultivated . | ||||
| FLOWERING PLANTS AND FERNS | ||||
| Common English Name | Alternative Names | Latin Name | Status | Location |
| Adderstongue ( fern ) | Ophioglossum vulgatum | L | Little Preston | |
| Agrimony | Agrimonia eupatoria | L | Lemonroyd | |
| Alsike Clover | Trifolium hybridum | C | ||
| American Willowherb | Epilobium ciliatum/adenocaulon | L | Little Preston | |
| American x S.F.Willowherb | E. ciliatum x E. obscurum | L | Little Preston | |
| Amphibious Bistort (water) | Persicaria amphibia | L | St .Aidan’s | |
| Annual Pearlwort | Sagina apetala | C | Fuel Depot | |
| Arrow-head (water) | Sagittaria sagittifolia | River Aire SE388274 | ||
| Australian Swamp Stonecrop | New Zealand Pigmyweed | Crassula helmsii | St Aidan’s SE390280 | |
| Autumn Hawkbit | Leontodon autumnalis | L | Little Preston | |
| Beaked Hawksbeard | Crepis vesicaria | L | Shan House Bridge | |
| Bee Orchid | Ophrys apifera | L | Lemonroyd & Little Preston | |
| Bergenia (escape) | Bergenia cordifolia | R | Lowther | |
| Betony | Stachys officinalis | R | Great Preston SE387304 | |
| Bifid Hemp-Nettle | Galeopsis bifida | L | Lemonroyd | |
| Biting Stonecrop (escape) | Sedum acre | C | Fuel Depot | |
| Bitter Vechling | Lathyrus linifolius (montanus) | L | Temple Newsam | |
| Bittersweet | Woody Nightshade | Solanum dulcamara | C | |
| Black Bindweed | Fallopia / Polygonum convolvulus | C | Fleet Lane & Skelton | |
| Black Bryony | Tamus communis | L | Astley Ln & Newsam Grn | |
| Black Horehound | Ballota nigra ssp.meridionalis | R | Fleet Plantation SE376289 | |
| Black Medick | Nonsuch | Medicago lupulina | C | |
| Black Mustard | Brassica nigra | C | ||
| Black Nightshade | Solanum nigrum | L | Fuel Depot | |
| Black Spleenwort (fern) | Asplenium adiantum-nigrum | R | Methley Copse SE392276 | |
| Bladder Campion | Silene vulgaris | L | Lemonroyd | |
| Blue Fleabane | Erigeron acer | R | Skelton Grange | |
| Bluebell | Wild Hyacinth | Hyacinthoides non-scripta | C | Temple Newsam |
| Bluish-leaved Hawkweed | Hieraceum salticola | L | St Aidan’s | |
| Bogbean | Menyanthes trifoliata | R | St Aidans | |
| Bouncing Bett | Double Soapwort | Saponaria officinalis | L | Skelton |
| Bracken (fern) | Pteridium aquilinum | L | Old Lock area | |
| Brackish Water Crowfoot (water) | Ranunculus baudotii | L | St Aidan’s | |
| Bristly Ox-Tongue | Picris echioides | C | Nr Skelton marsh | |
| Broad -leaved Willowherb | Epilobium montanum | C | ||
| Broad Bean | Vicia faber | L | St Aidan’s | |
| Broad Buckler Fern (fern) | Dryopteris dilatata | L | Temple Newsam | |
| Broad leaved Everlasting Pea (escape) | Lathyrus latifolius | R | By dragline | |
| Broad-leaved Dock | Rumex obtusifolius | C | ||
| Broad-leaved Pondweed (water) | Potamogeton natans | C | St Aidans | |
| Brooklime | Veronica beccabunga | L | Skelton marsh | |
| Bugle | Ajuga reptans | C | ||
| Bush Vetch | Vicia sepium | L | Canal, W of hide | |
| Butterbur | Petasites hybridus | L | Eshald Lane | |
| Buttonweed | Cotula coronopifolia | L | Astley islands | |
| Canadian Fleabane | Conyza canadensis | L | On Shan Ho Bridge | |
| Canadian Golden Rod(escape) | Solidago canadensis/altissima | L | Eshald Lane | |
| Canadian Waterweed (water) | Elodea canadensis | C | St Aidans | |
| Celery leaved Buttercup | Ranunculus sceleratus | C | St Aidan’s | |
| Charlock | Wild Mustard | Sinapis arvensis | C | Temple Newsam |
| Chicory | Succory | Cichorium intybus | L | Fuel Depot |
| Cleavers | Goosegrass | Galium aparine | C | |
| Cloth of Gold (escape) | Achillea sp. | R | Fuel Depot | |
| Clustered Bellflower | Campanula glomerata | R | Lemonroyd | |
| Clustered Dock | Rumex conglomeratus | C | ||
| Coltsfoot | Tussilago farfara | C | ||
| Columbine (escape) | Aquilegia sp. | R | Skelton | |
| Common BirdsFoot Trefoil | Eggs & Bacon | Lotus corniculatus | C | |
| Common Catsear | Hypochoeris radicata | C | ||
| Common Centaury | (white flow form @ Ashponds) | Centaurium erythraea | C | |
| Common Chickweed | Stellaria media | C | ||
| Common Comfrey | Symphytum officinale | L | St Aidan’s | |
| Common Cudweed | Filago vulgaris / germanica | L | Shan House Bridge | |
| Common Dog Violet | Viola riviniana | L | Temple Newsam | |
| Common Duckweed (water) | Lemna minor | C | ||
| Common Evening Primrose | Lesser Eve Primrose | Oenothera biennis | L | Skelton |
| Common Fiddleneck | Amsinckia intermedia | L | Woodlesford SE376288 | |
| Common Field Speedwell | Buxbaum’s Speedwell | Veronica persica | C | St Aidan’s |
| Common Figwort | Scrophularia nodosa | L | Lemonroyd | |
| Common Fleabane | Pulicaria dysenterica | L | Skelton Grange | |
| Common Forgetmenot | Field Forgetmenot | Myosotis arvensis | C | |
| Common Fumitory | Fumaria officinalis | L | Skelton | |
| Common Hemp-nettle | Galeopsis tetrahit | L | St Aidan’s SE392276 | |
| Common Horsetail | Field Horsetail | Equisetum arvense | L | Fleet Lane |
| Common Mallow | Cheesecakes | Malva sylvestris | C | Fleet Lane |
| Common Melilot | Ribbed Melilot | Melilotus officinalis | C | |
| Common Mouse-Ear | Mouse-Ear Chickweed | Cerastium fontanum | C | |
| Common Orache | Atriplex patula | L | Shan Ho Bridge | |
| Common Skullcap | Scutellaria galericulata | L | Astley margins | |
| Common Snapdragon (escape) | Antirrhinum majus | L | Skelton | |
| Common Sorrel | Rumex acetosa | L | Fleet Lane | |
| Common Spotted Orchid | Dactylorchis fuchsii | C | Shan Ho Bridge | |
| Common Spotted x Sthrn Marsh Orchid | Dactylorchis grandis | L | Ash Ponds | |
| Common St John’s Wort | Perforate St John’s Wort | Hypericum perforatum | L | St Aidan’s |
| Common Storksbill | Erodium cicutarium | L | Shan Ho Bridge | |
| Common Toadflax | Linaria vulgaris | C | ||
| Common Twayblade | Listera ovata | L | Low Ash Ponds | |
| Common Valerian | Valeriana officinalis | L | Lemonroyd | |
| Common Vetch | Vicia sativa | C | ||
| Common Water Starwort (water) | Callitriche stagnalis (palustris) | C | Ash Ponds | |
| Common Whitlowgrass | Erophila verna | C | Lemonroyd | |
| Common Winter-Cress | Barbarea vulgaris | L | Skelton | |
| Coriander | Coriandrum sativum | R | Little Preston; Rare in Yorkshire | |
| Corn Buttercup | Ranunculus arvensis | L | Fleet Lane | |
| Corn Poppy | Common Poppy | Papaver rhoeas | C | Fleet Lane |
| Corn Sow-Thistle | Sonchus arvensis | L | Fleet Lane | |
| Cotton Thistle | Onopordum acanthium | R | Woodlesford SE376288 | |
| Cow Parsley | Anthriscus sylvestris | C | ||
| Cowslip | Primula veris | L | Lemonroyd | |
| Creeping Buttercup | Ranunculus repens | C | ||
| Creeping Cinquefoil | Potentilla reptans | L | Riverside paths | |
| Creeping Thistle | Cirsium arvense | C | ||
| Creeping Yellow Cress | Rorippa sylvestris | L | Skelton Lake | |
| Crimson Clover (roc) | Trifolium incarnatum ssp incarnatum | R | Shan House Bridge SE390275 | |
| Crosswort | Galium cruciata/ Cruciata laevipes | L | Lowther | |
| Cultivated Flax (r.o.c) | Linseed | Linum usitatissimum | R | Lemonroyd |
| Curled Dock | Rumex crispus | C | ||
| Curled x Broad-leaved Dock | (crispus x obtusifolius) | Rumex x pratensis | L | Little Preston |
| Cut-Leaved Cranesbill | Geranium dissectum | C | ||
| Daisy | Bellis perennis | C | ||
| Dame’s Violet | Hesperis matronalis sp. | L | By Biffa, St Aidan’s SE402287 | |
| Dandelion | Taraxacum officionale | C | ||
| Danish Scurvygrass | Cochlearia danica S | C | A642, Swillington SE374296 | |
| Dock (hybrid) | Rumex obtusifolius x cristatus | L | St Aidan’s | |
| Dock (hybrid) | Rumex obtusifolius x palustris | L | St Aidan’s | |
| Dock (hybrid) | Rumex obtusifolius x crispus x conglomeratus | L | St Aidan’s | |
| Dog’s Mercury | Mercurialis perennis | C | ||
| Dotted Loosestrife (escape) | Lysimachia punctata | L | Lemonroyd | |
| Dovesfoot Cranesbill | Geranium molle | C | ||
| Dutch Crocus | Crocus x stellaris | R | Great Preston SE387304 | |
| Early Golden-Rod | Solidago gigantea | L | Fleet Lane | |
| Early Winter-cress | Medium flowered Winter-cress | Barbarea intermedia | L | Lemonroyd Lock |
| Enchanters Nightshade | Circaea lutetiana | C | Fleet Lane | |
| Equal-leaved Knotgrass | Polygonum arenastrum | C | Lemonroyd | |
| Euphorbia sp. (escape) | Euphorbia sp. | R | St Aidan’s | |
| Eyebright | Euphrasia officinalis/ nemorosa | L | Shan Ho Bridge | |
| Fairy Flax | Linum catharticum | L | Nr Skelton marsh | |
| Fat Duckweed (water) | Lemna gibba | L | Canal at Fishponds Lock SE352301 | |
| Fat Hen | Chenopodium album | C | St Aidan’s | |
| Fennel Pondweed (water) | Potamogeton pectinatus | River Aire 5E397278 | ||
| Feverfew | (Tanacetum parthenium) | Chrysanthemum parthenium | L | Skelton |
| Few -flowered Garlic | Allium paradoxum | L | Lowther Lake SE402278 | |
| Field Bindweed | Convolvulus arvensis | C | ||
| Field Pansy | Viola arvensis | C | Fleet Lane | |
| Field Pennycress | Thiaspi arvense | R | Jinny Moor Lane | |
| Field Pepperwort | Common Pepperwort | Lepidium Campestre | L | Skelton Grange |
| Field Scabious | Knautia arvensis | L | Skelton | |
| Fig-leaved Goosefoot | Chenopodium ficifolium | C | Astley islands | |
| Floating Pennywort (Water) | Hydrocotyle ranunculoides | By Canal Woodlesford | ||
| Flowering Rush | Butomus umbellatus | Leventhorpe Lake SE368297 | ||
| Fool’s Parsley | Aethusa cynapium | C | ||
| Fool’s Watercress | Apium nodiflorum | C | Lowther Lake | |
| Fox and Cubs | Pilosella aurantiaca | L | Astley Lake | |
| Foxglove | Digitalis purpurea | L | St Aidan’s & Temple New | |
| Fritillary (escape) ) | Fritillaria meleagris | R | Fuel Depot | |
| Garden Angelica | Angelica archangelica | C | River banks | |
| Garden Candytuft (escape) | Iberis umbellata | R | Skelton | |
| Garden Lady’s Mantle (escape) | Alchemilla mollis | R | St Aidan’s & Skelton | |
| Garden Strawberry | Fragaria ananassa | R | Causeway, St Aidan’s SE390276 | |
| Garden Tulip (escape) ) | Tulipa species | R | Caroline Bridge | |
| Garlic Mustard | Hedge Garlic. Jack by the Hedge | Alliaria petiolaria | C | |
| Germander Speedwell | Bird’s Eye Speedwell | Veronica chamaedrys | C | Temple Newsam |
| Giant Hogweed | Heracleum mantegazzianum | C | ||
| Gipsywort | Lycopus europaeus | L | Astley Lake | |
| Goat’s Rue (escape) | (white flowered form) | Galega officinalis | R | Skelton |
| Goatsbeard | Jack-go-to-bed-at-noon | Tragopogon pratensis | C | Riverside paths |
| Golden Dock | Rumex maritimus | C | Astley Lake SE384287 | |
| Golden Melilot | Tall Melilot | Melilotus altissima | L | Lemonroyd |
| Golden Saxifrage | Chrysoplenium oppositifolium | R | Temple Newsam SE366321 | |
| Good King Henry | Chenopodium bonus-henricus | L | Woodlesford SE376288 | |
| Grape Hyacinth (escape) | Muscari armeniacum | R | Caroline Bridge | |
| Grass Poly | Lythrum hissopifolium | L | Skelton Lake; Rare in Yorkshire | |
| Grass Veitchling | Lathylus nissolia | L | Skelton | |
| Great Burnet | Sanguisorba officinalis | L | St Aidan’s | |
| Great Lettuce | Lactuca virosa | L | St Aidan’s | |
| Great Mullein | Common Mullein | Verbascum thapsus | L | Fuel Depot |
| Great Willow-Herb | Codlins & Cream | Epilobium hirsutum | C | |
| Greater Birdsfoot Trefoil | Marsh Birdsfoot Trefoil | Lotus pendunculatus (uliginosus) | L | Temple Newsam |
| Greater Knapweed | Centaurea scabiosa | C | ||
| Greater Plantain | Ratstail Plantain | Plantago major | C | |
| Greater Spearwort | Ranunculus lingua | L | Little Preston | |
| Greater Stitchwort | Stellaria holostea | C | Temple Newsam | |
| Greater Yellow Cress | Rorippa amphibia | L | Astley Lake | |
| Green Alkanet | Pentaglottis sempervirens | R | Skelton | |
| Green Pigweed (r.o.c) | Green Amaranth | Amaranthus chlorostachys/hybr | R | Astley Lake |
| Ground Elder | Aegopodium podagraria | C | ||
| Ground Ivy | Nepeta | Glechoma hederacea | L | Old Lock area |
| Groundsel | Senecio vulgaris | C | ||
| Hairlike Pondweed (water) | Potamogeton trichoides | L | Astley Lake | |
| Hairy Bittercress | Cardamine hirsuta | C | ||
| Hairy St John’s Wort | Hypericum hirsutum | L | Shan Ho Bridge | |
| Hairy Tare | Vicia hirsuta | L | Astley Lake | |
| Hardhead | Common or Black Knapweed | Centaurea nigra | C | |
| Haresfoot Clover | Trifolium arvense | C | ||
| Hartstongue (fern) | Phyllitis scolopendrium | L | Old Lock area | |
| Heartsease | Wild Pansy | Viola tricolor | C | Fleet Lane |
| Heath Bedstraw | Galium saxatile | L | Skelton | |
| Heath Groundsel | Senecio sylvaticus | L | Shan Ho Bridge | |
| Hedge Bedstraw | Galium mollugo | C | Skelton | |
| Hedge Bindweed | Convolvulus. Great Bindweed | Calystegia sepium | C | |
| Hedge Mustard | Sisymbrium officinale | L | Skelton | |
| Hedge Parsley | Torilis aponica | L | Caroline Bridge | |
| Hedge Woundwort | Stachys sylvatica | C | ||
| Hemlock | Conium maculatum | L | St Aidan’s | |
| Hemlock Water Dropwort | Oenanthe crocata | L | Caroline Bridge | |
| Hemp | Cannabis sativa | R | Little Preston SE387304 | |
| Henbit Dead-nettle | Lamium amplexicaule | L | Fleet Lane | |
| Herb Bennet | Geum urbanum | C | ||
| Herb Robert | Geranium robertianum | C | ||
| Himalayan Balsam | Indian Balsam | Impatiens glandulifera | C | |
| Hoary Cress sp. | Hoary Pepperwort. Thanet Weed | Cardaria draba / Lepidium draba | L | Fuel Depot |
| Hoary Ragwort | Senecio erucifolius | L | Lower Ash Ponds | |
| Hoary Willowherb | Epilobium parviflorum | C | St Aidans | |
| Hogweed | Cow Parsnip | Heracleum sphondylium | C | |
| Honesty (escape) | Lunaria annua | L | Woodlesford | |
| Hop | Humulus lupulus | L | Fleet Lane | |
| Hop Trefoil | Trifolium campestre | C | Lower Ash Ponds | |
| Horse-Radish (r.o.c) | Armoracia rusticana | L | Shan Ho Bridge | |
| Hybrid Monkeyflower | Mimulus x robertsii | R | Ash Ponds. Rare in Yorks .SE365303 (recorded 1993) | |
| Imperforate St John’s Wort | Hypericum maculatum | L | Fuel Depot | |
| Intermediate Evening Primrose | Oenothera x fallax | L | Skelton | |
| Ivy-leaved Speedwell | Veronica hederifolia ssp.lucorum | L | Temple Newsam SE370318 | |
| Ivy-leaved Toadflax | Cymbalaria muralis | L | Eshald Lane SE369288 | |
| Jacob’s Ladder (escape) | Polemonium caeruleum | L | Fuel Depot | |
| Japanese Knotweed | Fallopia japonica | L | Riverside | |
| Kidney Vetch | Anthyllis vulneraria | C | Lemonroyd | |
| Knotgrass | Polygonum aviculare | C | ||
| Knotted Pearlwort | Sagina nodosa | C | St Aidan Islands | |
| Lady’s Bedstraw | Galium verum | C | ||
| Lady’s Smock | Cuckoo Flower | Cardamine pratensis | C | Lowther & Little Preston |
| Lamium (escape) | Lamiastrum gale.ssp.argentatum | R | Fleet Lane | |
| Large Bindweed | American Bellbine/Convolvulus | Calystegia sylvestris/silvatica | C | |
| Leafy Hawkweed sp. | Hieraceum vagum | L | Fleet Lane plantation | |
| Least Duckweed (water) | Lemna minuta (Wolffia arrhiza) | C | Astley Lake | |
| Lesser Burdock | Arctium minus | C | ||
| Lesser Celandine | Ranunculus ficaria | C | ||
| Lesser Centaury | Centaurium pulchellum | C | St Aidan’s SE389276 | |
| Lesser Knapweed | Slender Hardhead | Centaurea nemoralis | L | St Aidan’s |
| Lesser Sea Spurrey | Spergularia marina | St Aidan’s SE390280 | ||
| Lesser Stitchwort | Stellaria graminea | L | Temple Newsam | |
| Lesser Swine-cress | Slender Wart-cress | Coronopus didymus | C | Astley Lake |
| Lesser Trefoil | Common Yellow Trefoil | Trifolium dubium | C | |
| Lily Orange Pixie (escape) | Lilium sp. | R | St Aidan’s | |
| Lords and Ladies | Cuckoo Pint | Arum maculatum | L | Shan Ho Bridge |
| Lucerne (r.o.c) | Alfalfa | Medicago sativa ssp.sativa | L | Nr Astley sluice |
| Lupin (Russell) (escape) | Lupin polyphyllus ( x regalis ) | L | Fleet Lane | |
| Maiden Pink | Dianthus deltoides | L | Woodlesford | |
| Male Fern (fern) | Dryopteris filix-mas | L | Old Lock area | |
| Many-seeded Goosefoot | Chenopodium polyspermum | R | Lowther; Rare in Yorkshire | |
| Marestail (water) | Hippuris vulgaris | L | St. Aidan’s new sluice | |
| Marjoram | Origanum vulgare | L | Caroline Brdg & Litt Preston | |
| Marsh Bedstraw | Galium palustre | L | Skelton & Astley Lake | |
| Marsh Dock | Rumex palustris | C | Astley Lake | |
| Marsh Marigold | Kingcup | Caltha palustris | L | Temple Newsam |
| Marsh Ragwort | Senecio aquaticus | L | Skelton | |
| Marsh Thistle | Cirsium palustre | L | Ash Ponds | |
| Marsh Willowherb | Epilobium palustre | C | Temple Newsam | |
| Marsh Woundwort | Stachys palustris | L | Astley islands | |
| Marsh Yellow Cress | Rorippa palustris | L | Astley Lake | |
| Meadow Buttercup | Ranunculus acris | C | ||
| Meadow Cranesbill | Geranium pratense | R | Old Lock area | |
| Meadow Pea | Meadow Vetchling | Lathyrus pratensis | C | |
| Meadowsweet | Filipendula ulmaria | L | Riverside | |
| Mexican Fleabane | Erigeron karvinskianus | L | Canal Bridge Woodlesford SE370293 | |
| Michaelmas Daisy (escape) | Aster sp x salignus | L | St Aidan’s & Ash Ponds | |
| Milk Parsley | Peucedanum palustre | L | Low Ash Ponds | |
| Monkey Flower | Mimulus | Mimulus guttatus | L | Astley islands |
| Monkshood | Aconitum napellus | R | Temple Newsam. Poss.Garden escape | |
| Mouse-Ear Hawkweed | (Pilosella officinarum) | Hieracium pilosella | C | |
| Mugwort | Artemisia vulgaris | C | ||
| Musk Mallow | Malva moschata | L | Fleet Lane | |
| Narrow Buckler Fern | Dryopteris carthusiana | R | Ash Ponds. Rare in Yorks .SE365303 (recorded 1993) | |
| Narrow Water Starwort (water) | Autumnal Water Starwort | Callitriche hermaphroditica | L | Skelton marsh |
| Narrow-Leaved Hawkweed | Hieraceum umbellatum | C | Lemonroyd | |
| Narrow-leaved Michaelmas Daisy | Aster lanceolatus | St Aidan’s 5E402286 | ||
| Narrow-leaved Pepperwort | Lepidium ruderale | L | Caroline Bridge | |
| Narrow-leaved Ragwort | Senecio inaequidens | L | Newsam Green Rd | |
| Narrow-leaved Vetch | Vicia angustifolia (Vicia sativa ssp nigra) | Ash Ponds | ||
| Niger | Guizotia abyssinica | R | Little Preston | |
| Nipplewort | Lapsana communis | C | ||
| Nodding Bur-marigold | Bidens cernua | Astley Lake | ||
| Nuttall’s Waterweed (water) | Elodea nuttallii | St Aidans | ||
| Opium Poppy | Papaver somniferum | L | Shan Ho Brdg/ Little Preston | |
| Oriental Poppy (escape) | Papaver orientalis sp | R | Fuel Depot | |
| Ox-Eye Daisy | Moon Daisy. Margeurite | Leucanthemum vulgare | C | |
| Oxford Ragwort | Senecio squalidus | L | Fuel Depot | |
| Pale Flax | Linum bienne | R | Shan House Bridge SE390275 | |
| Pale Lady’s Mantle | Alchemilla xanthochlora | L | Temple Newsam | |
| Pale Persicaria | Persicaria lapathifolia | L | Little Preston | |
| Pale Willow-Herb | Epilobium roseum | C | ||
| Parsley Piert | Aphanes arvensis | L | Fleet Lane | |
| Pennyroyal | Mentha pulegium | R | Hillside, St Aidan’s SE395288 | |
| Petty Spurge | Euphorbia peplus | C | ||
| Pignut | Earth-nut | Conopodium maps | L | Temple Newsam |
| Pineappleweed | Matricaria discoidea | C | ||
| Plantain-leaved Leopardsbane (escape) | Doronicum plantagineum | R | Fuel Depot | |
| Ploughman’s Spikenard | Inula conyza | L | Skelton | |
| Pot Marigold (escape) | Calendula officinalis | R | Fuel Depot | |
| Prickly Lettuce | Lactuca serriola | C | Fleet Lane SE380285 | |
| Prickly Sow-Thistle | Rough or Spiny Sow Thistle | Sonchus asper | C | |
| Primrose | Primula vulgaris | R | Old lock area, St Aidan’s SE385276 | |
| Procumbent Pearlwort | Mossy Pearlwort | Sagina procumbens | St Aidans | |
| Purple Loosestrife | Lythrum salicaria | L | Astley islands | |
| Purple Toadflax | Linaria purpurea | L | Skelton | |
| Pyramidal Orchid | Anacamptis pyramidalis | R | W of Caroline Bridge | |
| Pyrenean Cranesbill | Hedgerow Cranesbill | Geranium pyrenaicum | R | Lemonroyd |
| Quinoa | Chenopodium quinoa | L | Goosefields | |
| Ragged Robin | Lychnis flos-cuculi | L | Old Fleet Lane | |
| Ragweed | ( psilostachya ) | Ambrosia artemisiifolia | L | Little Preston |
| Ragwort | Common Ragwort | Senecio jacobaea | C | |
| Ramsons | Wild Garlic | Allium ursinum | C | |
| Rape (r.o.c) | Oil seed Rape | Brassica napus (oleifera) | C | |
| Red Bartsia | Odontites verna | L | Lemonroyd | |
| Red Campion | Silene dioica/Melandrium dioicum | C | ||
| Red Clover | Trifolium pratense | C | ||
| Red Dead-Nettle | Lamium purpureum | C | ||
| Red Goosefoot | Chenopodium rubrum | C | St Aidan’s | |
| Red Hot Poker (escape) | Kniphofia sp. | R | Shan Ho Br & Woodlesford | |
| Red Star-thistle | Purple Star-thistle | Centaurea calcitrapa | R | Little Preston; Rare in Yorkshire |
| Red Valerian | Centranthus ruber | L | Fleet Ln (white flow form ) | |
| Redleg | Persicaria | Persicaria maculosa/Polyg persic | C | |
| Ribwort Plantain | Plantago lanceolata | C | ||
| Rose-Bay | Fireweed.. Willow-Herb | Chamerion angustifolium | C | |
| Rough Cocklebur | Xanthium strumarium | L | Little Preston | |
| Rough Hawksbeard | Crepis biennis | L | Fleet plantation | |
| Sainfoin (r.o.c) | Onobrychis viciifolia | R | Fleet Lane | |
| Salad Burnet | (Poterium sanguisorba) | Sanguisorba minor | L | Fleet Lane Football field |
| Salsify (r.o.c) | Tragopogon porrifolius | R | Shan Ho Bridge | |
| Sand Spurrey | Spergularia rubra | St Aidans | ||
| Scarlet Pimpernel | Poor Man’s Weatherglass | Anagallis arvensis | L | Old Lock area |
| Scented Mayweed | Matricaria recutita | C | Fleet Lane | |
| Scentless Mayweed | Tripleurospermum inodorum | C | St Aidan’s | |
| Sea Beet | Beta vulgaris ssp.maritima | L | Astley Lake | |
| Sea Spurge | Euphorbia paralias | R | Skelton. Rare inland .SE344301 | |
| Sea Wormwood | Artemisia maritima | R | Shan Ho Bridge | |
| Self-Heal | Prunella vulgaris | C | ||
| Shasta Daisy (escape) | Leucanthernum x superbum | R | St Aidans | |
| Sheep’s Sorrel | Rumex acetosella | L | W of Fleet plantation | |
| Shepherd’s Purse | Capsella bursa-pastoris | C | ||
| Short-fruited Willowherb | Epilobium obscurum | L | Little Preston | |
| Silverweed | Potentilla anserina | C | ||
| Slender Speedwell | Veronica filiformis | L | E end Lowther Lake | |
| Small Nettle | Urtica urens | L | Little Preston SE387304 | |
| Small Scabious | Scabiosa columbaria | L | Fleet Lane Football field | |
| Small Toadflax | Chaenorhinum minus | L | Ash Ponds | |
| Small-Flowered Cranesbill | Geranium pusillum | L | Fuel Depot | |
| Small-flowered Evening | Least Ev. Prim. | Oenothera cambrica | L | Fuel Depot |
| Smooth Hawksbeard | Crepis capillaris | C | ||
| Smooth Sow-Thistle | Sonchus oleraceus | C | Skelton | |
| Smooth Tare | Vicia tetrasperma | L | Low Ash Ponds | |
| Snowdrop (escape) | Galanthus nivalis | L | Fleet Lane | |
| Soapwort | Saponaria officinalis | L | Woodlesford | |
| Southern Marsh Orchid | (Dactylorhiza praetermissa) | Dactylorchis maculata | L | Lowther & Shan Ho Bridge |
| Spanish Bluebell (escape) | Hyacinthoides hispanica | L | Lowther Lake | |
| Spear Mint (escape) | Mentha spicata | L | Skelton | |
| Spear Thistle | Cirsium vulgare | C | ||
| Spear-leaved Orache | Halberd-leaved Orache | Atriplex prostrata / hastata | L | Lt Preston & Woodlesford |
| Spiked Water Milfoil (water) | Myriophyllum spicatum | C | St Aidans | |
| Spotted Medick | Calvary Clover | Medicago arabica | L | St Aidan’s |
| Spreading Yellow Sorrel | Oxalis corniculata | L | Little Preston SE387304 | |
| Square St John’s Wort | Square stalked St J W | Hypericum tetrapterum | L | Astley islands |
| Square-stemmed Willowherb | Epilobium tetragonum | L | Little Preston | |
| Sticky Groundsel | Senecio viscosus | L | Fuel Depot | |
| Sticky Mouse-ear | Cerastium glomeratum | L | Ash Ponds | |
| Stinging Nettle | Common Nettle | Urtica dioica | C | |
| Stinking Hellebore (escape) | Helleborus foetidus | R | Lemonroyd | |
| Sulphur Cinquefoil (escape) | Potentilla recta | L | Skelton | |
| Sun Spurge | Euphorbia helioscopia | L | Fleet plantation | |
| Sunflower (escape) | Annual Sunflower | Helianthus annuus | R | Skelton |
| Sweet Cicely | Myrrhis odorata | Woodlesford Locks SE365295 | ||
| Tall Rocket | Tumbling Mustard | Sisymbrium altissimum | L | Skelton |
| Tansy | Tanacetum vulgare | L | Shan Ho Bridge | |
| Tansy-leaved Phacelia (roc) | Phacelia tanacetifolia | R | Skelton M1 | |
| Thale Cress | Arabidopsis thaliana | C | Ash Ponds | |
| Thorn-apple | Datura stramonium | R | Little Preston SE387304 | |
| Thyme-leaved Sandwort | Arenaria serpyllifolia | Skelton by railway SE346302 | ||
| Thyme-leaved Speedwell | Veronica serpyllifolia | L | Temple Newsam | |
| Tomato (escape ) | Lycopersicon esculentum sp | L | Astley islands | |
| Tormentil | Potentilla erecta | C | ||
| Trailing Tormentil | Potentilla anglica | L | Temple Newsam | |
| Trifid Bur-Marigold | Bidens tripartita | L | Astley Lake margins | |
| Tufted Forgetmenot | (Myosotis caespitosa) | Myosotis laxa | C | |
| Tufted Vetch | Vicia cracca | C | ||
| Tufted Vetch var.alblflora | Vicia cracca var.albiflora | R | St Aidan’s | |
| Viper’s Bugloss | Echium vulgare | R | Lemonroyd & Fuel depot | |
| Wall Speedwell | Veronica arvensis | L | Woodlesford | |
| Wall-Rue (fern) | Asplenium ruta-muraria | L | Old Lock area | |
| Wallflower (escape) | Erysimum cheiri | R | Caroline Bridge | |
| Water – pepper | Persicaria hydropiper | L | Temple Newsam SE368317 | |
| Water Dock | Rumex hydrolapathum | L | Astley islands | |
| Water Figwort | Scrophularia auriculata | L | Astley Lake margins | |
| Water Forget-me-not | Myosotis scorpioides | C | Lowther Lake | |
| Water Mint | Mentha aquatica | C | Astley Lake margins | |
| Water Plantain (water) | Alisma plantago-aquatica | C | St Aidan’s | |
| Water Speedwell | Veronica anagallis-aquatica | C | Astley islands | |
| Watercress | Rorippa nasturtium-aquaticum | L | Little Preston | |
| Wavy Bittercress | Cardamine flexuosa | C | Temple Newsam SE370318 | |
| Wayside Cudweed | Marsh Cudweed | Gnaphalium uliginosum | L | Astley islands |
| Weld | Dyer’s Rocket | Reseda luteola | C | |
| Welsh Poppy (escape) | Meconopsis cambrica | R | Fleet Lane | |
| White Campion | Silene latifolia/Melandrium album | C | ||
| White Clover | Dutch or Kentish Clover | Trifolium repens | C | |
| White Dead-Nettle | White Archangel | Lamium album | C | |
| White Melilot | Bokhara Clover | Melilotus albus | R | Caroline Bridge |
| White Mustard | Sinapis alba | L | Shan Ho Bridge | |
| White Water-Lily (water) | Nymphaea alba | L | Lowther Lake | |
| Wild Angelica | Angelica sylvestris | C | Riverside | |
| Wild Carrot | Daucus carota | C | ||
| Wild Daffodil | Narcissus pseudonarcissus | R | Temple Newsam SE366318 | |
| Wild Mignonette | Reseda lutea | R | Fleet Lane | |
| Wild Radish | Raphanus raphanistrum | L | Shan Ho Bridge | |
| Wild Teasel | Dipsacus fullonum | L | Fleet Lane | |
| Wild Turnip | Brassica rapa var. campestris | L | Woodlesford | |
| Wood -Sage | Teucrium scorodonia | L | Lemonroyd | |
| Wood Anemone | Anemone nemorosa | L | Temple Newsam | |
| Wood Dock | Red Veined Dock | Rumex sanguineus | L | Little Preston |
| Wood Forget-me-not (Escape) | Myosotis sylvatica | C | ||
| Wood Goldilocks | Goldilocks Buttercup | Ranunculus auricomus | L | Nr Fishponds Lock |
| Wood-Sorrel | Oxalis acetosella | C | Temple Newsam | |
| Woodruff | Galium odoratum | C | ||
| Wormwood | Artemisia absinthium | L | St Aidan’s | |
| Yarrow | Achillea millefolium | C | ||
| Yellow Bartsia | Parentucellia viscosa | L | Nr Skelton marsh | |
| Yellow Dodder | Cuscuta campestris | R | Little Preston | |
| Yellow Flag | Flag Iris | Iris pseudacorus | L | St Aidan’s & Lowther Lake |
| Yellow Loosestrife | Lysimachia vulgaris | L | Lowther & Astley Lakes | |
| Yellow Pimpernel | Lysimachia nemorum | L | Temple Newsam | |
| Yellow Rattle | Hay Rattle | Rhinanthus crista-galli / minor | C | St Aidan’s |
| Yellow Wort | Blackstonia perfoliata | C | St Aidan’s | |
| Zigzag Clover | Trifolium medium | L | Astley Lane | |
| Pyramidal Orchid & Broad-leaved Helleborine found just out of recording area @ SE404278 | ||||
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