come back into its own as an amateur pursuit. The macroscopic Stoneworts, some of the largest freshwater algae can however be tackled with a low power microscope. Several comprehensive guides to these are now available. Charophytes of Britain & Ireland by Moore, Tebbs & Green. 1987. is an inexpensive BSBI handbook (No: 5). They even have their own Red Data Book for Britain & Ireland, Stoneworts, by Stuart & Church. 1992. JNCC. And more recently Charophytes of the Baltic Sea edited by Schubert & Blindlow.2003 and Charophytes of the Nordic countries, by Langangen.2008. give us a wider more up to date picture. Books on identification of marine algae Despite our county having one of the longest coastlines for its area, our marine algal flora is poorly known. As far as identification is concerned however the macroscopic marine algae are very well covered. Seaweeds of the British Isles 1977-2003, the natural history museum, covers the Red Algae in five separate books, all now published; the Brown Algae in two volumes, the second of which is still awaited; the Yellow-Greens, (Tribophyceae) represented solely by the genus Vaucheria, in one volume, 1987; and the Green Algae in one volume - now however superseded by Green Seaweeds of Britain & Ireland, by Brodie, Maggs and John. 2007. British Phycological Society. Additional intended volumes on the microscopic marine Cyanophyta, the Prymnesiophyta and the Marine Diatoms, have however, apparently been abandoned. And typical for the Natural History Museum, a limited printing means that Volumes 2b and 3 are already out of print. The whole set will set you back around £200. However there are two fully illustrated Field Studies Aidgap Guides that cover the red and brown macroscopic species; A Field Key to the British Brown Seaweeds. 1979; and A Field Key to the British Red Seaweeds, 1987, both by Sue Hiscock. Distribution is covered by A Check-list and Atlas of the Seaweeds of Britain & Ireland, by Hardy, Guisy & Arnold. 2nd edition. 2006. British Phycological Society. In addition to the checklist some 642 species are mapped on a 10km sq. basis. The book at £97 is expensive, but fortunately it is available free on the web as a pdf file from: www.brphycsoc.org. documents- ChkList%26%20Atlas.pdf.url. Books covering identification of Mosses, Liverworts and Hornworts Those of us who started trying to identify Mosses and Liverworts in the 1950s struggled with the only two comprehensive books men available, The Student's Handbook of British Mosses by H. N. Dixon & H.G. Jameson 3rd edition 1924; and The Student's Handbook of British Hepatics 2nd edition 1926, by S.M. Macvicar and H.GJameson. When beginning to tackle a new group, a key to families or genera is always ovenvhelming as any subtle dichotomies readily lead one astray. The latter book however was quite usable for a beginner, because it had Jameson's super little drawings of each species, so you could take shortcuts by trying to match your specimen to one of his little sketches, which often included a sketch of a whole shoot of the liverwort in question. By flicking 10 Essex Field Club Newsletter No. 59, May 2009