I garden at a gated community in Kent UK. The roadway is made up of concrete paviours each of which is chamfered on every side and they butt against the next without mortar - the result is that soil builds up in the gaps and weeds grow. When I started some years ago these paviours were infested with grass and weeds. Glyphosate killed them off. Then mosses replaced the weeds I killed off and various moss sprays I applied killed the moss. Now a new small plant is taking over as in the photograph - it seems resistant to all forms of weedkiller. Is it vascular? Have I created a habitat for this new plant accidentally?
It is a Liverwort. One such as Marchantia polymorpha. This site may be of interest to you... http://www.downgardenservices.org.uk/liverwort.htm
Yes, a liverwort as Silver surfer says. But with those crescent-shaped gemma cups it looks more like genus Lunularia. Not that I know a great deal about liverworts!
Thanks Tony..Lunularia would fit much better. https://www.google.co.uk/search?q=L...&sa=X&ei=7K2KVIeND4ixUY67hLgD&ved=0CAgQ_AUoAQ
