10 destroy the original flora and its associated fauna and, of course, the meadow is then lost for ever. Occasionally you can find evidence of an old meadow, perhaps in a corner of a field where the tractor and plough can't reach: I remember finding just such a small triangle of ancient grassland in a wheat field near Tring in Hertfordshire. The most noticeable plants here were cowslips, a sure indicator of old grassland. Other threats have come from the expanding urban fringe of many of our cities. The meadows are simply drained and built on. Neglect, lack of traditional management and the application of artificial fertilisers and selective herbicides are other factors that have contributed to the decline of this valuable habitat in Britain. The Roding Valley reserve itself consists of about 110 acres of land bordering the River Roding. Most of the meadows in this area will have been in existence virtually unalt- ered probably for many hundreds of years, the legacy of an ancient and conservative system of management. The stable management history, the flood meadows being grazed and the higher and therefore drier meadows being cut for hay, has allowed a rich and characteristic flora to develop and with it a distinctive fauna. Biological recording in the valley over the last seven years has revealed the presence of some 250 species of flowering plants. The individual meadows often have very rich floras - 40-50 species is not uncommon in the Roding Valley. Many of the plants noted are characteristic of ancient grass-