Thuidium tamariscinum or common tamarisk moss on a willow near Whitchurch Down yesterday, #Dartmoor, #Devon. #photography #mosstodon
Historically, moss (not this species), was collected across Dartmoor in WW1 ‘moss drives’, to be used in wound dressings.
More info here:

https://www.legendarydartmoor.co.uk/2016/03/21/moss_gatherers/#:~:text=That%20is%20until%20I%20stumbled%20across%20the,prepared%20dressings%2C%20ready%20for%20immediate%20hospital%20service.