feather rot

feather rot

[′feth·ər ‚rät]
(plant pathology)
A fungus rot of both dead and living tree trunks caused by Poria subacida and characterized by the white stringy or spongy nature of the rotted tissue.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.