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Map of the sites holding the search term ""Ceratophyllum submersum""

There are 29 sites that mention "Ceratophyllum submersum".

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…a arrhiza. There is also an interesting community where two species of hornwort Ceratophyllum submersum and Ceratophyllum demersum grow together. The invertebrate interest is also high, as rare and notable species such as Odontomyia ornata, Oplodontha viridula and Hydaticus trans…

Holland Haven Marshes

…rush Eleocharis uniglumis, both rare in Essex, are also present. Rigid hornwort Ceratophyllum demersum is widespread in these ditches, while the presence of the nationally uncommon soft hornwort Ceratophyllum submersum, at one location, is indicative of a brackish influence. Othe…

Sea Bank Clay Pits

…y scarce species, brackish water crowfoot Ranunculus baudotii and soft hornwort Ceratophyllum submersum. Superimposed upon this basic suite of species are variations such as the local dominance of Canadian waterweed Elodea canadensis and the moss Fontinalis antipyretica. In addit…

Sizewell Marshes

…orts a diverse aquatic flora which includes the nationally scarce soft hornwort Ceratophyllum submersum, fen pondweed Potamogeton coloratus and whorled water milfoil Myriophyllum verticillatum. The variety of ditch depths and widths, together with their fringing vegetation provid…

Holborough to Burham Marshes

… contain plants such as sea club rush Bolboschoenus maritimus and soft hornwort Ceratophyllum submersum which are tolerant of these conditions. Those of Holborough Marshes on the western bank are less brackish; opposite leaved pondweed Groenlandia densa and greater bladderwort Ut…

Blackwater Estuary

…y scarce species, brackish water crowfoot Ranunculus baudotii and soft hornwort Ceratophyllum submersum, which occur among the more frequent fennel pondweed Potamogeton pectinatus and spiked water milfoil Myriophyllum spicatum. The transition to freshwater is demarcated by stands…

Puxton Moor

…e the nationally scarce rootless duckweed Wolffia arrhiza and the soft hornwort Ceratophyllum submersum, the latter dominating a number of ditches. Emergent species are also well represented and branched bur reed Sparganium erectum, tubular water dropwort Oenanthe fistulosa, wat…

South Thames Estuary and Marshes

…inant. Nationally scarce plants associated with the dykes include soft hornwort Ceratophyllum submersum (4) with water soldier Stratiotes aloides (4) present in dykes near Higham. The mud flats have beds of eelgrass including Zostera angustifolia (4) and Zostera noltei (4)and th…

North Norfolk Coast

…eral interesting species of water plant recorded are the uncommon soft hornwort Ceratophyllum submersum and blunt leaved pondweed Potamogeton obtusifolius. A fringe of dry grassland is present above the saltmarsh at Holkham and is annually mown and occasionally grazed. Vertebrat…

Foulness

…are generally dominant, whilst nationally uncommon plants include soft hornwort Ceratophyllum submersum and spiral tasselwood Ruppia cirrhosa. In 1987 a plant previously considered extinct in Britain was discovered. Foulness is now the only known locality for annual sea purslane …

Halvergate Marshes

…ies anywhere in Broadland. These support the regionally important soft hornwort Ceratophyllum submersum and brackish water crowfoot Ranunculus baudotii. The brackish ditch edges support the nationally scarce stiff saltmarsh grass Puccinellia rupestris and the regionally important…

Dungeness, Romney Marsh and Rye Bay

… less diverse brackish community. The typical aquatic species are soft hornwort Ceratophyllum submersum, spiked water milfoil Myriophyllum spicatum, fennel pondweed Potamogeton pectinatus, brackish water crowfoot Ranunculus baudotii, thread leaved water crowfoot Ranunculus tricho…

Loughkeelan

…extensive growth of stonewort Chara spp. The presence of abundant Soft Hornwort Ceratophyllum submersum and smaller quantities of Fan leaved Water Crowfoot Ranunculus circinatus is of particular interest, with the former species occurring here in one of only 3 recorded sites in I…

Stanford Training Area

…ts of great interest include those around Tottington where the rare water plant Ceratophyllum submersum grows. By contrast to the fluctuating meres, the artificial, non fluctuating meres possess well developed marginal vegetation and are much used by waterfowl. The Wissey and the…

Pocklington Canal

…rts a diverse aquatic flora including the nationally rare species soft hornwort Ceratophyllum submersum and flat stalked pondweed Potamogeton friesii, together with five additional pondweeds Potamogeton spp. The canal is fringed by swamp, fen and inundation communities including …

Slapton Ley

… thus support a wider range of interesting macrophytes, including soft hornwort Ceratophyllum submersum at its only Devon site. Slapton Ley is classified under the SSSI Guidelines as a naturally eutrophic ‘standing water type 10’ lake, with representative species including the st…

Crouch and Roach Estuaries

…elweed Ruppia maritima are the most common aquatic plant species. soft hornwort Ceratophyllum submersum, brackish water crowfoot Ranunculus baudotii and spiral tasselweed Ruppia cirrhosa also occur. These three species are all fairly uncommon nationally, the latter species being …

Shrawley Wood

…amine amara are present in the waterside communities and the rare soft hornwort Ceratophyllum submersum occurs in one of the pools. Over 400 species of fungi have been recorded in the woodland. The wood is important for its breeding birds which include the three native species of…

Cromford Canal

… Potamogeton natans. Where there is sufficient light penetration rigid hornwort Ceratophyllum demersum and Canadian pondweed Elodea canadensis are locally abundant. curled pondweed Potamogeton crispus is also present and apparently increasing with water starwort Callitriche ssp. …

Sandbeach Meadows

…lus and parsley water dropwort Oenanthe lachenalii, together with soft hornwort Ceratophyllum submersum and golden dock Rumex maritimus both of which are nationally uncommon species. The meadows are both cut for hay and grazed by sheep and cattle. In winter regular flooding occur…

Cantley Marshes

…ldellia ranunculoides, flat stalked pondweed Potamogeton friesii, soft hornwort Ceratophyllum submersum and floating club rush Isolepis fluitans. Tall herb fen found on the river frontage supports a population of the nationally scarce marsh sowthistle Sonchus palustris. The wide…

Inner Thames Marshes

…wfoot Ranunculus trichophyllus and two nationally scarce species, soft hornwort Ceratophyllum submersum and brackish water crowfoot Ranunculus baudotii. Elsewhere the drains are largely dominated by common reed Phragmites australis. The seasonally wet drains and shallow depressio…

Rye Harbour

…n three notable plant species, rootless duckweed Wolffia arrhiza, soft hornwort Ceratophyllum submersum and hair like pondweed Potamogeton trichoides. Intertidal Habitats The saltmarsh fringing the River Rother is subject to varying degrees of tidal influence. glassworts Salicorn…

Oakley Pool

…Epilobium hirsutum. The submerged plants includes the locally uncommon hornwort Ceratophyllum submersum. The secluded nature of the area provides a valuable breeding site for a number of birds including the reed warbler Acrocephalus scirpaceus which has a large breeding colony in…

The Swale

…ated with the dykes include beaked tasselweed Ruppia maritima and soft hornwort Ceratophyllum submersum*. There is also a good invertebrate community with beetles, dragon and damsel flies and flies especially well represented. Other less extensive habitats in the Swale include w…

Pevensey Levels

…kweed Lemna polyrhiza predominate with the nationally scarce spineless hornwort Ceratophyllum submersum and the nationally scarce pondweed Potamogeton trichoides also present. Ditches surrounding and within arable areas support relatively few open water species and tend to be cha…

Twyni Lacharn - Pentywyn / Laugharne - Pendine Burrows

…ncommon species such as greater bladderwort Utricularia vulgaris, soft hornwort Ceratophyllum submersum and the stonewort, Chara hispida (an alga). In shallower areas marginal species typified by common reed Phragmites australis occur, but also grey club-rush Schoenoplectus taber…

Lewes Brooks

…r they have been cleaned out, including both rigid and the rarer soft hornworts Ceratophyllum demersum and C. submersum, the water crowfoots Ranunculus circinatus and Ranunculus aquatilis and opposite leaved pondweed Groenlandia densa. Other pondweeds found here include shining p…

Benfleet and Southend Marshes

…lyceria spp., duckweeds Lemna spp., mare's tail Hippuris vulgaris and hornworts Ceratophyllum demersum and the uncommon C. submersum. Other uncommon species include beaked tasselweed Ruppia maritima and brackish water crowfoot Ranunculus baudotii. The great crested newt and scar…

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