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,
Sorbus reducta Garden Merit. Sorbus reducta Sorbus reducta (铺地花楸), the dwarf Chinese mountain ash, is a species of flowering plant in the family Rosaceae, native to western China (South West Sichuan and North West Yunnan}. Growing to tall by wide, it is a dense deciduous spreading shrub. Each leaf, long, has up to 15 leaflets which turn to brilliant shades of red in the autumn (fall). White flowers in spring are followed by red or pink, and then white berries in autumn. The Latin specific epithet "reducta" means "dwarf", referring to its compact habit. This plant has gained the Royal Horticultural Society's