plumose
Concise Oxford English Dictionary © 2008 Oxford University Press:
plumose /pluːˈməʊs, ˈpluːməʊs, -z/
▶adjective chiefly Biology having many fine filaments or branches which give a feathery appearance.
– origin C18: from L. plumosus ‘full of down or feathers’, from pluma ‘down’.
'plumose' also found in these Oxford entries:

