Will Blozan wrote (Aug 09,
2007): "...The white is lichen for the most part.
There are very few to no needles left for HWA. Here are
some close-ups. Southern Appalachian hemlocks are major lichen
substrates. That is in stark contrast with the hemlocks I have
climbed up north in New England and PA- virtually no epiphytes
of any kind in the canopy."