Thanks to our somewhat damp climate, Wales is home to a staggering 850 different species of Bryophytes, representing three quarters of the total number (which is 1100) found in the UK as a whole. Bryophyte is the collective name for a group of plants that include mosses, liverworts and hornworts. This year the British Bryological Society is celebrates its hundreth birthday and has a variety of activities to mark the centenary, including designing a number of moss trails at Treborth Gardens in Bangor; the National Botanic Garden of Wales in Carmarthenshire and also one in Harlech, Gwynedd. It's there Pauline Smith explores the wonderful world of bryology and goes "mossing"!