P1000383 (640x480)

P1000383 (640x480)

Observation - P1000383 (640x480). Description: I have been observing this plant since spring to look for any flowers to aid identification; nothing so far. It has joints all the way along the stalk and each joint has a set of leaves. It is growing on a mossy rock in shady woodland near a Roman lead

I have been observing this plant since spring to look for any flowers to aid identification; nothing so far. It has joints all the way along the stalk and each joint has a set of leaves. It is growing on a mossy rock in shady woodland near a Roman lead excavation on limestone farmland. I would love to know what it is please. I will add another photo as well this one is to give size reference.