Backstone Bank and Baal Hill Woods one side valley, there is a small population of small-leaved lime, "Tilia cordata", which occurs here close to its northern limit and at an unusually high altitude. On base-rich soils, the woodland typically consists of ash, "Fraxinus excelsior", and wych elm, "Ulmus glabra", over an understorey of hazel, "Corylus avellana", and bird cherry, "Prunus padus", and a rich ground flora that includes lady-fern, "Athyrium filix-femina", male fern, "Dryopteris filix-mas", and hard shield-fern, "Polystichum aculeatum". On more acid soils, sessile oak, "Quercus petraea", and birch, "Betula sp.", are dominant. The under-storey, of hazel, holly, "Ilex aquifolium", rowan, "Sorbus aucuparia", and hawthorn,
Mountain Ash East Mountain Ash East Mountain Ash East is a community and coterminous electoral ward in Rhondda Cynon Taf, Wales. It primarily includes the part of the village of Mountain Ash east of the River Cynon. The community was formed in 2016 when the larger community of Mountain Ash was divided into East and West to match the ward boundaries. The Mountain Ash East community came into effect on 1 December 2016 following the enactment of "The Rhondda Cynon Taf (Communities) Order 2016". It includes the village of Mountain Ash to the east of the River Cynon and also the villages of