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Offwell Wetland Survey

Wetland Plant Species Lists 1991/2000

Comparison of species lists from the Wetland Surveys of 1991 and 2000

Listed below are all the plant species recorded in the wetland area in the 1991 and 2000 surveys.

The 1991 survey carried out after the wetland restoration was completed, found 94 species of flowering plants, ferns, mosses and fungi.

It is important to remember that the rhododendron clearance started in this area in 1988. The Wetland was actually flooded in March 1989 to create a transition from open water to dry land.  Therefore by the time of the 1991 survey, there was significant natural regeneration particularly where it was wetter. Prior to the clearance rhododendron dominated.

The 2000 survey recorded 85 different species, not including fungi, which were outside the scope of the survey.

A purple cell next to a plant indicates that it was present in the wetland in1991. A dark green cell indicates the species was present in 2000. A white cell in one of the two survey columns means that the species was not recorded at the time of that particular survey.

Plant species Common Name

1991 Survey

2000 Survey

Pinaceae

t

tt tt
Pinus sylvestris L. Scots Pine........................... t t
Salicacea

t

tt tt
Salix caprea agg. Goat Willow t t
Betulaceae

t

tt tt
Alnus glutinosa (L.) Gaertn. Alder t t
Betula pendula Roth Silver Birch t t
Corylaceae

t

tt tt
Corylus avellana L. Hazel t t
Fagaceae

t

tt tt
Quercus robur L. English Oak t t
Aquifoliaceae

t

t tt
Ilex aquifolium L. Holly t t
Aceraceae

t

tt tt
Acer pseudoplanatus L. Sycamore t t
Ranunculaceae

t

tt tt
Caltha palustris L. Marsh Marigold t t
Ranunculus flammula L. Lesser Spearwort t t
Ranunculus lingua L. Greater Spearwort t t
Ranunculus repens L. Creeping Buttercup t t
Cruciferae

t

t t
Alliaria petiolata (M.Bieb.) Cavara & Grande Garlic Mustard/
Jack-By-The Hedge
t t
Cardamine flexuosa With. Wavy Bitter-cress t t
C. hirsuta L. Hairy Bittercress t t
Saxifragaceae

t

tt tt
Chrysosplenium oppositifolium L. Opposite-Leaved Golden Saxifrage t t
Crassulaceae

t

t t
Crassula helmsii (T.Kirk) Cockayne New Zealand Pygmyweed t t
Rosaceae

t

ttt tt
Filipendula ulmaria (L.) Maxim. Meadowsweet t t
Geum urbanum L. Wood Avens/Herb Bennet t t
Potentilla anserina L. Silverweed t t
Prunus avium L. Bird Cherry t t
Rubus fruticosus agg. Bramble t t
R. idaeus Raspberry t t
Sorbus aucuparia L. Rowan t t
Leguminosae

t

t t
Trifolium repens L. White Clover t t
Ulex europaeus L. Gorse t t
Geraniaceae

t

t t
Geranium robertianum L. Herb-Robert t t
Hypericaceae

t

t t
Hypericum androsaemum L. Tutsan t t
H. pulchrum L. Slender St John's Wort t t
H. tetrapterum Fr. Square-stalked St John's Wort t t
Onagraceae

t

t t
Circaea lutetiana L. Enchanter's Nightshade t t
Epilobium hirsutum Great Willowherb t t
E. montanum agg. Broad-leaved Willowherb t t
E. palustre Marsh Willowherb t t
Chamerion angustifolium (L.) J. Holub Rosebay Willowherb t t
Araliaceae

t

t t
Hedera helix L. Ivy t t
Umbelliferae

t

t t
Angelica sylvestris L. Angelica t t
Anthriscus sylvestris (L.) Hoffm. Cow Parsley t t
Chaerophyllum temulum L. Rough Chervil t t
Heracleum sphondylium L. Hogweed t t
Oenanthe crocata L. Hemlock Water Dropwort t t
Euphorbiaceae

t

t t
Mercurialis perennis L. Dog's Mercury t t
Urticaceae

t

t t
Urtica dioica L. Stinging Nettle t t
Ericaceae

t

t t
Rhododendron ponticum L. Rhododendron t t
Primulaceae

t

t t
Lysimachia nemorum L. Yellow Pimpernel t t
Polygonaceae

t

t t
Polygonum hydropiper L. Water Pepper t t
Reynoutria japonica Houtt. Japanese Knotweed t t
Rumex conglomeratus Murray Clustered Dock t t
R. obtusifolius L. Broad-leaved Dock t t
R. sanguineus (L.) Wood Dock t t
Callitrichacea

t

t t
Callitriche platycarpa Kutz. Various-leaved Water Starwort t t
Callitriche stagnalis Scop. Common Water-Starwort t t
Menyanthaceae

t

t t
Menyanthes trifoliata L. Bogbean t t
Boraginaceae

t

t t
Myosotis discolor Pers. Changing Forget-me-not t t
Myosotis scorpioides L. Water Forget-me-not t t
Caryophyllaceae

t

t t
Silene dioica (L.) Clairv. Red Campion t t
Stellaria media (L.) Vill. Common Chickweed t t
Labiateae

t

Galiopsis angustifolia Ehrh.ex Hoffm. Red Hemp Nettle t t
Lamiastrum galeobdolon(L.) Ehrend. &Polatschek Yellow Archangel t t
Mentha aquatica L. Water Mint t t
Stachys sylvatica L. Hedge Woundwort t tt
Rubiaceae

t

t t
Galium palustre agg. Marsh Bedstraw t t
Solanaceae

t

t t
Solanum dulcamara L. Bittersweet/Woody Nightshade t t
Scrophulariaceae

t

t t
Digitalis purpurea L. Foxglove t t
Mimulus guttatus DC. Monkeyflower t t
Scrophularia nodosa L. Common Figwort t t
S. auriculata L. Water Figwort t t
Veronica beccabunga L. Brooklime t .
V. montana L. Wood Speedwell t t
V. persica Poir. Field Speedwell t t
Plantaginaceae

t

t t
Plantago lanceolata L. Ribwort Plantain t t
P. major L. Greater Plantain t t
Valerianaceae

t

t t
Valeriana officinalis agg. Valerian t t
Compositae

t

t t
Arctium lappa L. Greater Burdock t t
Carduus crispus L. Welted Thistle t t
Cirsium palustre (L.) Scop. Marsh Thistle t t
C. vulgare (Savi) Ten. Spear Thistle t t
Matricaria discoidea DC. Pineapple-weed t t
Pulicularia dysenterica (L.) Bernh. Fleabane t t
Senecio sp. Ragwort t t
Sonchus arvensis L. Perennial Sow-Thistle t t
Taraxacum officinale agg. Dandelion t t
Alismataceae

t

t t
Alisma plantago-aquatica L. Common Water Plantain t t
Butomaceae

t

t t
Butomus umbellatus L.

Flowering Rush

t t
Hydrocharitaceae

t

t t
Elodea canadensis Michx. Canadian Pondweed t t
Potamogetonaceae

t

t t
Potamogeton natans L. Broad-leaved Pondweed t t
Graminae

t

t t
Agrostis capillaris L. Common Bent t t
Glyceria fluitans (L.) R. Br. Floating Sweet Grass t t
Holcus lanatus L. Yorkshire Fog t t
Melica uniflora Retz. Wood Melick t t
Phleum pratense L. Timothy t t
Poa nemoralis L. Wood Meadow-grass t t
P. pratensis L. Smooth Meadow-grass t t
Juncaceae

t

t t
Juncus acutiflorus Ehrh. ex Hoffm. Sharp-flowered Rush t t
J. bulbosus L. Bulbous Rush t t
J. effusus L. Soft Rush t t
Cyperaceae

t

t t
Carex otrubae Podp. False Fox Sedge t t
C. paniculata L. Great Tussock Sedge t t
C. pendula Huds. Pendulous Sedge t t
C. remota L. Remote Sedge t t
Scirpus sylvaticus L. Wood Club-rush t t
Liliaceae

t

t t
Endymion nonscriptus (L) Garcke. Bluebell t t
Iridaceae

t

t t
Iris pseudacorus L. Yellow Iris t t
Lemnaceae

t

t t
Lemna minor L. Common Duckweed t t
Sparganiaceae

t

t t
Sparganium erectum L. Branched Bur-reed t t
Typhaceae

t

t t
Typha angustifolia L. Lesser Reedmace t t
T. latifolia L. Greater Reedmace t t
Equisetaceae

t

t t
Equisetum sp. Horsetail t t
Ferns

t

t t
Athyrium felix-femina (L.) Roth. Lady Fern t t
Blechnum spicant (L.) Roth. Hard Fern t t
Dryopteris austriaca Jacq.) Woynar Broad Buckler Fern t t
Osmunda regalis L. Royal Fern t t
Phyllitis Scolopendrium (L.) Newman Hart's-tongue t t
Pteridium aquilinum (L.) Kuhn. Bracken t t
Mosses

t

t t
Atrichum undulatum (Hedw.) P.Beauv., Prodr. t t t
Brachythecium rivulare B., S. & G. t t t
Campylopus paradoxus Wils. t t t
Dicranum scoparium Hedw. t t t
Eurhynchium praelongum (Hedw.)Br. Eur. t t t
Eurhynchium striatum (Hedw.) Schp. t t t
Hypnum andoi tt t t
Hypnum cupressiforme Hedw. tt t t
Isopterygium elegans (Brid.) Lindb. t t t
Mnium hornum Hedw. tt t t
Polytrichum formosum Hedw. t t t
Sphagnum *subsecundum Nees tt t t
Thuidium tamarascinum (Hedw.)B., S. & G t t t
Lichens

t

t t
Various

t

t t
Fungi

t

t

Boletus badius Fr.

Bay Boletus t t

Phallus impudicus Pers.

Stinkhorn t t
Total Number of Species Recorded

t

94

85

  Comparison of species lists from the Wetland Surveys of 1991 and 2000

Access Plant Species Lists for Individual Areas within the Wetland.

Open Water Swamp Marsh Dry Land
Area D Area C Area B Area A
Area C2 Area B2 Area A2

 

Wetland Survey Contents

 

 

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