CYNGOR CEFN GWLAD CYMRU
COUNTRYSIDE COUNCIL FOR WALES SITE OF SPECIAL SCIENTIFIC INTEREST CITATION
NEATH PORT TALBOT
TAIRGWAITH
Date of Notification:
2003
National Grid Reference:
SN 715117
O.S. Maps
1:50,000 Sheet number: 160
1:10,000 Sheet number: SN 71 SW
Site Area:
4.5 ha
Description: Tairgwaith is of special interest for its species-rich grasslands, which are host to several
uncommon plant species. Such vegetation is now increasingly scarce in the Welsh lowlands,
most having been lost to agricultural improvement.
The site is located to the south of the village of Tairgwaith, near Brynaman. It consists of four
enclosures that lie on gently north-west and south-west facing slopes at an altitude of about
180m. Together they display a range of species-rich grasslands, and their transitions to wetter,
marshy grassland
The westernmost field supports dry, neutral grassland. Here, grasses such as common bent
Agrostis capillaris and sweet vernal-grass
Anthoxanthum odoratum occur, together with red
clover
Trifolium pratense, cat’s-ear
Hypochaeris radicata, ribwort plantain
Plantago lanceolata,
common knapweed
Centaurea nigra and bird’s-foot trefoil
Lotus corniculatus. The soil in this
field has a slightly acidic nature, indicated by species such as tormentil
Potentilla erecta and
devil’s-bit scabious
Succisa pratensis. Great burnet
Sanguisorba officinalis also occurs here in
profusion.
The easternmost enclosure supports similar grassland, but here there is no acidic element to the
soil. Species such as tormentil and devil’s-bit scabious are replaced by meadow vetchling
Lathyrus pratensis, ox - eye daisy
Leucanthemum vulgare, autumn hawkbit
Leontodon
autumnalis and rough hawkbit
L. hispidus.
The central field also supports neutral grassland, but here it grades into fen-meadow and marshy
grassland communities, characterised by purple moor-grass
Molinia caerulea together with
meadow thistle
Cirsium dissectum, and sedges such as oval sedge
Carex ovalis and carnation
sedge
Carex panicea. In places, a slightly base-rich nature to the soil is indicated by the presence
of species such as quaking grass
Briza media. Across the southern half of this field, where
drainage is more impeded, sharp-flowered rush
Juncus acutiflorus, greater bird’s-foot-trefoil
Lotus uliginosus, and common marsh-bedstraw
Galium palustre become prevalent.
Notable plant species recorded at Tairgwaith include greater butterfly-orchid
Platanthera
chlorantha. Up to eighty spikes of this species are present in the easternmost field, and it is also
present in the central enclosure of the site. Whorled caraway
Carum verticillatum, an Atlantic
species characteristic of unimproved pastures in the South Wales coalfield, also occurs across
much of the site.