Nardia scalaris Ladder Flapwort

A prostrate, dioicous leafy liverwort that forms mats on damp, acidic often finely gravelled tracks, quarries, fine scree and also in areas of late lying snow. The presence of peg like underleaves is a useful identification feature but they are not always easy to see in the field. It is largely an upland pioneer species which is widespread and locally abundant in western and northern Britain. It is common in Wales and frequent to abundant in the uplands of West Glamorgan, particularly in Neath Port Talbot, but uncommon in Gower. It is a frequent member of the roadside bryoflora of forest roads in plantations. Sporophyte capsules are common from late winter to summer.