Rhos Gargoed

Site of Special Scientific Interest · 52.2848, -3.8217

Also within

Dyfed County

Description

Description An upland area of unimproved herb-rich grassland situated on a south-facing slope in the upper Teifi valley at an altitude of 290 metres. In the main the sward consists of a grass-sedge community containing sweet vernal-grass Anthoxanthum odoratum, red fescue Festuca rubra and purple moor-grass Molinia caerulea as the dominant grasses. Also present is the scarce quaking-grass Briza media. The site is notable for its abundance of globe-flower Trollius europaeus which according to Salter (1935) was once ‘frequent in Cardiganshire, principally in the hill district of the county towards the mountains’. The forbs include saw-wort Serratula tinctoria, heath spotted-orchid Dactylorhiza maculata ssp. ericetorum, sheep’s-bit Jasione montana, yellow rattle Rhinanthus minor, cross-leaved heath Erica tetralix and heath milkwort Polygala serpyllifolia.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
sweet vernal grass Anthoxanthum odoratum LC grass poaceae
quaking grass Briza media VU grass poaceae
red fescue Festuca rubra LC grass poaceae
purple moor grass Molinia caerulea LC grass poaceae
heath spotted orchid Dactylorhiza maculata LC herb orchidaceae
sheep's bit Jasione montana VU herb campanulaceae
heath milkwort Polygala serpyllifolia LC herb polygalaceae
yellow-rattle Rhinanthus minor DD herb orobanchaceae
saw wort Serratula tinctoria VU herb asteraceae
globe flower Trollius europaeus VU herb ranunculaceae
cross leaved heath Erica tetralix NT shrub dwarf ericaceae

Insects to look out for

These moths, butterflies and beetles are known to feed on plants recorded at this site, and carry a notable UK conservation status — but a host-plant being present doesn't mean the insect has actually been recorded here. Treat this as "worth watching for," not a confirmed sighting.

SpeciesStatusVia host-plant
Reddish buff
Acosmetia caliginosa
Critically Endangered Serratula tinctoria
Chequered skipper
Carterocephalus palaemon
Endangered Molinia caerulea
Shoulder-striped clover
Heliothis maritima
Endangered Erica tetralix
Golden plusia
Polychrysia moneta
Endangered Trollius europaeus
Mouse moth
Amphipyra tragopoginis
Vulnerable Serratula tinctoria
Large heath
Coenonympha tullia
Vulnerable Molinia caerulea
Beetle
Cryptocephalus biguttatus
Vulnerable Erica tetralix
Satyr pug
Eupithecia satyrata
Vulnerable Erica tetralix, Rhinanthus minor
Grayling
Hipparchia semele
Vulnerable Festuca rubra
Silver studded blue
Plebejus argus
Vulnerable Erica tetralix
The anomalous
Stilbia anomala
Vulnerable Molinia caerulea
Small heath
Coenonympha pamphilus
Near Threatened Festuca spp.
Silver barred
Deltote bankiana
Near Threatened Molinia caerulea
Grey scalloped
Dyscia fagaria
Near Threatened Erica tetralix

Host-plant data: Cook et al. (2025), Traits data for the butterflies and macro-moths of Great Britain and Ireland, 2024, UK Centre for Ecology & Hydrology / Butterfly Conservation; and Padovani et al. (2020), Database of Insects and their Food Plants (DBIF), UK Centre for Ecology & Hydrology (both Open Government Licence). Contains data supplied by UK Centre for Ecology & Hydrology.