Contents of Volume 52 (2010)

• The Hypericum maculatum-Hypericum perforatum complex in Cambridgeshire (v.c. 29) (David J. Barden) 3
• Small Mammal Live Trapping Studies in Hayley Wood (R M Featherstone) 19
• Conributions towards a new algal flora of Cambridgeshire (Vice-county 29) 5. Phylum Chlorophyta continued. (Hilary Belcher, Eric George & Erica Swale) 23
• The Lichens of Wicken Fen (Mark Powell) 26
• Water dropworts Oenanthe species in Cambridgeshire (C. James Cadbury) 35
• The high living Tardigrades of Cambridge (Cass Bromley) 40
• The flora of a flat roof (Peter Reynolds) 43
• Bog Oaks in Haddenham's Fens in February 2009 (Paul Mason) 49
• Cherry Hinton Survey 2009 (Jonathan Shanklin) 52
• Vascular Plant Records (Alan Leslie) 64
• Bryophyte records (C.D. Preston & M.O. Hill) 73
• Invertebrate records (Louise Bacon) 74
• Plant Galls (Sean L.M. Karley) 77
• OBITUARIES 78
• BOOK REVIEWS 83
• Natural History Bibliography of Cambridgeshire 2005-2010 (Toby Carter) 86
• Weather Summary for 2009 (John Kapor) 91