Bewick and Beanley Moors in association with old collapsing heather bushes. Conifer plantations aside, the moors have little woodland cover; what exists is found on the boundaries and following the paths of streams at lower elevations. Spwecies include alder ("Alnus glutinosa"), hawthorn ("Crataegus monogyna"), brown birch ("Betula pubescens"), rowan ("Sorbus aucuparia") and occasional ash ("Fraxinus excelsior"), and ground-cover of yellow pimpernel ("Lysimachia nemorum"), wood sorrel ("Oxalis acetosella") and smooth-stalked sedge ("Carex laevigata"). As with the bogs, so the woodland also provide transition locations, such as from wet birch-wood to purple moor-grass or to bogs of lesser pond-sedge ("Carex acutiformis"). Other wood species found include
Sorbus aucuparia larger forest trees. In Central Europe it often grows in association with red elderberry, goat willow, Eurasian aspen, and silver birch. The plant is highly flammable and tends not to accumulate plant litter. Other species of the genus "Sorbus" easily hybridize with "S. aucuparia" and hybrid speciation can result; hybrids include "Sorbus × hybrida", a small tree with oval serrated leaves and 2 to 3 pairs of leaflets, which is a hybrid with "Sorbus × intermedia", and "Sorbus thuringiaca", a medium-size tree with elongated leaves and 1 to 3 pairs of leaflets that are sometimes fused at the central vein,