I am looking for the botanical name for a (australian?) Cryptogam (or lichin) commonly called old man's beard.

It looks like think tangled grey/green hair, and hangs from branches in the bush and rainforest.

sometimes it is seen hanging in garden shops, but never for sale.

It MAY be a form of what some people call "reindeer moss"..

Any help would be great.

Thanks in advance.

I am looking for the botanical name for a (australian?) Cryptogam (or lichin) commonly called old man's beard.
Usnea barbata is the "old Man's beard" that is a lichen.