Pollen analysis from samples taken from the Lodge Road Bog (Baker, Moxey and Oxford, 1978) has revealed that although Oak has been a fairly constant feature of the pollen diagram for some 4,000 years, it is only in the last 1400 years that Beech and Hornbeam have become common in the northern part of the Epping Forest area, dating back to the Saxon period. For much of the intervening 2,500 years that separates these periods, the area that was to become Epping Forest is thought to have been dominated by Small-leaved Lime (Tilia cordata), a feature consistent with other pollen analyses undertaken elsewhere in western Europe. It is conjectured that the remarkably late decline of Lime in the Forest (then wildwood) coincided with the rise of the wood-pasture system in Saxon times. Lime is a very palatable tree; it is no longer found as a native in the Forest, but still occurs in many coppies in north Essex. There are three fine planted trees with girths of some 6 ft. in the Conservators' Hawk Wood Farm compound on Bury Road. The pollen diagram also tells us that other tree and shrub species have been present for at least 4,000 years in the Epping Forest area, among them Hazel, Elm, Birch, Alder and Sallow. The dense stands of unpollarded Beech on gravels are poor places for tree and shrub growth. You may find little else other than the odd Holly or perhaps Birch where a pollard has fallen. Much better are the areas of woodland on London Clay and chalky boulder clay. Here are found species such as Oak and Hornbeam, and every so often Field Maple, Ash or even Service, which is a speciality of woods on clay in south Essex. Service is not uncommon in the Forest, sometimes occurring as a pollard tree, often in small groups (it reproduces mainly by suckers). The Maple-like leaf (Fig. 5)is rather unusual for a member of the rose family. It is a tree of ancient woodland, becoming increasingly scarce further north. Even in nearby counties such as Cambridge and Norfolk it is known from only single specimens. Rowan, another member of the genus Sorbus, is common in the Forest. It may well be a long-established introduction to the Forest area. There are seemingly few well-grown trees and I don't know of any pollards (although it is generally only a small tree). It occurs frequently as a colonist of cleared ground, presumably the seeds being transported by birds. Birch occurs as two species. Silver and Downy (Betula pendula and B. pubescens). Both are common in the Forest on burnt or cleared sites and are particularly frequent as colonisers of wet acid grass-heath sites in the absence of grazing pressure, unfortunately drying out and overshading many sites to the detriment of the less competitive plants. Intermediates between the two birches also occur. The abundance of Birch in the Forest is a recent phenomenon. Richard Warner (1771) wrote of Birch 'Found on the Forest between High Beech and Golden Hill in the parish of Loughton: in general, not very common'. It may be a species susceptible to grazing pressure. Hazel is a very rare shrub in the Forest today. I know it from only a handful of sites - Warren Hill. Hatch Grove and on Bell Common (planted at this last site). It has a very palatable leaf and, like trees such as the Elms, is more frequent in the hedges and woods of nearby farmland, protected from grazing animals. Wych Elm (Ulmus glabra) is almost certainly native to the Forest. It is rare but occurs along the Ching Brook near Hatch Grove. In other places is has been planted, for example Wanstead Park. East Anglian Elm (Ulmus minor) has been found as a standard and pollard tree in the Lower Forest. Another elm is found as a pollard tree at Woodredon. I suspect it is a very long-established native elm in the Forest of a type belonging to a group that Oliver Rackham calls Lineage Elm after the wood in Suffolk which is the centre of its distribution (Plate 25). Wild Crab, the native apple, is not uncommon in the Forest. It seems to be adept at colonising the Forest's neutral grasslands (with other species such as Oak and Common Thorn) and persisting. In woodland it is often forced to compete with Oaks, Hornbeam and Beech and tall spindly trees result. The Forest has a good list of native Sallows. Willows and Poplars. Several non-native species are known to have been planted. One of the best places to see members of the Salicaceae is along the Ching Brook between Connaught Waters and Hatch Grove. Crack Willows (Salix fragilis) are found here, often with their trunks moss and lichen clad, prostrate over the brook itself. Where the brook crosses Whitehall Plain an interesting assemblage of willows is to be found including White (S. alba). Purple (S. purpurea). Grey (S. cinerea). Goat (S. caprea) and Crack and what I suspect are hybrids between Goat and Grey (S. x reichardtii). Burton (1983) reports the Creeping Willow (5. repens) and Grey Willow hybrid (S. x ambigua) from the Forest. The Creeping Willow, a small prostrate heathland species is found on Leyton Flats, Woodford Golf Course and Sunshine Plain and other heathy sites. Eared Willow (Salix aurita) and Osier (S. viminalis) are both reported as rarities from the Forest. Grey. Goat and Crack Willows are widespread in the Forest in the vicinity of brooks, ponds and wet ground. Near the Whitehall Plain willow site grows what is almost certainly the rarest native tree in Forest. Here there is a superb standard Black Poplar (Populus nigra) identified by its down-curved boughs which sweep down towards the ground and the huge bosses on the lower trunk. The Black Poplar is found generally on the flood-plains of rivers. It is a tree of southern England, growing most frequently 64