wilt

scorch in lodgepole pine on Samoa Peninsula

basal fire scar with callus

scorch by fire

staghead

dieback by Dermea pseudotsuga

dieback by Scirrhia

madrone canker by Fusicoccum

watery exudate (bleeding) of white pine blister rust

stain by Elytroderma

stain by Verticladiella

sapwood stain by Phellinus weirii

stain caused by saprophyte (species of Chorosplenium ?)

stain caused by roots of leafy mistletoe