A Moss-like Growth On A Bramble Thorn

Question

When out on a walk in the rural berkshire lanes, I stumbled across a patch of large, fruit bearing brambles – that seemed to carry a large abundance of a pink-green moss-like growths all across the branches. They varied in size – some being a couple centimetres in diameter, and others reaching the size of a tennis ball. I have never seen anything like this before – and was quite frankly curious as to what they actually are! I hope this finds you well.

• 

Answer 1

It's a combination of algae and fungi. This article tells more:

https://www.gardeningknowhow.com/ornamental/fungus-lichen/usnea-lichen-information.htm