Weed growing on and around rocks
I was wondering if anyone knew what this weed is that is growing on and around the rocks in my rockery. It's pale green in colour, and the 'leaves' are not leaves as such, more like tiny fluid filled sacs wihich feel spongy to the touch?
It's very easy to pull up, but I'm curious as to what it is!
(I'll upload a picture in the morning)