Day 15: For me, the main attraction at Rainey Creek is a tree festooned with Usnea longissima, the lichen I call "Mother Nature's Garland." Its semi-official common name is "Methuselah's Beard," presumably derived from the great lengths it sometimes attains. Unlike other Usneas, it does not form branches off the central cord; it may grow up to 10 feet according to Brodo, but after tracing one strand back a full six, I'm inclined to think that may be a low estimate.
Longissima only thrives where the air is free of pollutants, a factor which may also account for the healthier-than-average population of mosquitoes along Rainey Creek. From the bridge where the Usnea Tree stands, the view shows other trees equally wreathed, but only immediately alongside the stream channel. I have found other wisps of this graceful lichen further from the creek, struggling for survival where they may have been dropped by a bird carrying potential nesting material. This Usnea occurs in other local areas, but to date, I have found none as lush as those along Rainey Creek...as good a reason as any to pay it a visit when the skeeters aren't flying!
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