Cors Bodeilio National Nature Reserve

Cors Bodeilio National Nature Reserve lies in a shallow valley outside

Talwrn Talwrn is a small village between the county town of Llangefni and Pentraeth on the Isle of Anglesey, north Wales. Talwrn is most notable for the Grade II-listed 16th-century manor house of Plas Llanddyfnan, which lies just to the north of the ham ...

on the

Isle of Anglesey Anglesey ( ; ) is an island off the north-west coast of Wales. It forms the bulk of the Principal areas of Wales, county known as the Isle of Anglesey, which also includes Holy Island, Anglesey, Holy Island () and some islets and Skerry, sker ...

. Most of the land consists of a lime-rich

mire A peatland is a type of wetland whose soils consist of Soil organic matter, organic matter from decaying plants, forming layers of peat. Peatlands arise because of incomplete decomposition of organic matter, usually litter from vegetation, du ...

. This type of

wetland A wetland is a distinct semi-aquatic ecosystem whose groundcovers are flooded or saturated in water, either permanently, for years or decades, or only seasonally. Flooding results in oxygen-poor ( anoxic) processes taking place, especially ...

is rare, giving the reserve national importance. It is host to a large range of plants and animals, including the medicinal

leech Leeches are segmented parasitism, parasitic or Predation, predatory worms that comprise the Class (biology), subclass Hirudinea within the phylum Annelida. They are closely related to the Oligochaeta, oligochaetes, which include the earthwor ...

. A number of nationally local or rare species of plant have been recorded from the site including fen pondweed, several species of stonewort including the rare dwarf stonewort, olive earthtongue fungus (''Microglossum olivaceum''), fen pondweed, narrow-leaved marsh orchid and

fly orchid ''Ophrys insectifera'', the fly orchid, is a species of orchid and the type species of the genus ''Ophrys''. It is remarkable as an example of the use of sexually deceptive pollination and floral mimicry, as well as a highly selective and highly ...

The nature reserve is within a designated

Site of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain, or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland, is a conservation designation denoting a protected area in the United Kingdom and Isle ...

,CCW - Cors Bodeilio SSSI citation
/ref> is also a

Ramsar site A Ramsar site is a wetland site designated to be of international importance under the Ramsar Convention,8 ha (O) *** Permanent 8 ha (P) *** Seasonal Intermittent < 8 ha(Ts) **

National nature reserves in Wales Nature reserves in Anglesey Sites of Special Scientific Interest on Anglesey Llanddyfnan {{Anglesey-geo-stub