Day 51: I have quite a few "favourite" lichens. I mean, it's hard to choose a single one from over 1000 species (not counting subspecies) present right here in the Pacific Northwest, but Usnea longissima pretty much tops the list. It is Nature's version of a Christmas garland, its long strands unbranched and sometimes growing (in my personal observation) up to fifteen feet long. At Rainey Creek, it festoons many of the trees close by the water, dwindling in occurrence the farther one goes from the creek banks, as it is quite sensitive to air pollution and prefers the circulation afforded by proximity to moving water. Like other Usneas, it can be used to dye wool and cotton, and the current popularity of home dyeing with natural materials is leading to a decline in Usneas in some areas. Even as abundant as it is at Rainey Creek, I will not collect it. I prefer to observe, admire and enjoy Lichen Christmas all year 'round.
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