58 The Essex Naturalist The impetus to start this program came from several areas. During the initial mapping exercise contact had heen built up with around 150 botanists living or doing some recording in Essex, and following my appointment as successor BSBI Recorder to Stanley, circulation of a booklet summarising possible future recording projects in the county (in 1976) brought in a stream of records that has continued ever since. The biggest setback to the mapping and any potential new Flora was however the loss of Stanley's filing cabinets of letters, site lists and detailed notes on the rarities of the county, which were destroyed when these were taken over by the Essex Naturalists' Trust. This necessitated visiting or asking others to revisit numerous sites all over the county to re-gather information on our rarest and most endangered plants. In many cases publication of the 1974 Flora resulted in new sites coming to light as botanists realised that we did not know about them. At first these were assembled on the backs of the map cards, this information providing, for example the Essex data for the revised maps in the 2nd edition of the BSBI Sedges Handbook. Acquisition of a Sinclair QL computer, however, began to revolutionise the assembly of records and a start was made on producing comprehensive data files on local and rare plants for an eventual consultative Red Data File of Essex plants. In 1978 the scientific committee of the Colchester Natural History Society (CNHS), decided to take up my challenge in the 1976 possible Botanical Recording Projects booklet to map the distribution of Dittander on a 1 x 1 km square basis. Also around 1978, Jeremy Heath made out a list of records from Jermyn's Flora for each 10 x 10 km square, and from my maps, the records that had been made to the 1 x 1 km square level, and from 1979 lists of additional 1 x 1 km square records for the CNHS recording area began to appear in the CNHS publication Nature in North East Essex. Then, from 1982 onwards, Alan Wake organised botany recording/tuition meetings every Tuesday evening throughout the growing season, initially to map the flora of the Roman River Valley, and a steady band of list-making botanists began to be recruited. In addition, by the 1982 flowering season, Trev Tarpey had written a PC-based computer program, and Terri Tarpey had incorporated Jeremy Heath's lists into a computerised database. From then on the CNHS was all set to map the whole of their recording area on a 1 x 1 km square basis. This monumental work, probably the first really detailed mapping of any area since Ronald Good's Flora of Dorset, (Good, 1948) was eventually published in 1990 as the Wild Flowers of North East Essex (Tarpey 6k Heath, 1990). Meanwhile, as county recorder, I was pressurised to complete the BSBI's Monitoring Scheme, a pilot project for the Atlas 2000 proper, in which we were asked to re-record every third 10 x 10 km square during 1987 and 1988. In our case this involved squares TQ49, TQ79 and TR09 in the south of the county, and TL42, TL72 and TM02 in the north. Without the help of Shirley 6k Charles Watson, Jeremy Ison, Tim Pyner, Bill Chisholm and Ian Rose, we would never have made it in time. Fortunately, we decided that all our records would be kept on a 1 x 1 km sq. basis so that they could eventually be used for our own new county Flora. Then in 1990 the BSBI Scarce Plants Project was launched and from 1991-1992 we struggled to record on a 1 x 1 km sq. basis the location and abundance of 163 'scarce' species. Unfortunately, for us, many of these species were considered scarce,