Collection location: Sewanee, Franklin Co., Tennessee, USA [Click for map]
Location: 35°12’48.33"N, 85°54’14.26"W, el. 524 m. Piney Point Trail.
Substrate: Growing on the bark of a pine tree, Pinus.
Habitat: Low, open, pine-oak woodland on thin, sandy soil over sandstone at the edge of the western escarpment of the Cumberland Plateau.
medulla C-, K+ bright, deep yellow (immediately), KC+ yellow turns orangy-brown (slowly), Pd+ intense yellow (immediately)
Harris and Ladd, 2005, Preliminary Draft: Ozark Lichens, pp.133-134. Description of the pycnidia.
Sharnoff’s Imshaugia aleurites gallery
CNALH images, description, and locality map, and a larger, interactive locality map.
United States, Tennessee, Franklin County, Sewanee, Piney Point Trail. 10 Apr 2010. Chris Parrish 0082, det. James C. Lendemer (NY).
Common name: salted starburst lichen
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Isn’t that the damnedest thing… if you’re into that sort of thing, at least. Sort of reminiscent of the cetrarioids, but theirs are merely stalked, not on isidia. What a bizarre thing — if you’re going to invest in pycnidia why would you design them to fall off?? Maybe that’s part of a crafty compound-dispersal strategy…
There is a small patch of gnarly pines on this point, in our local sea of Quercus, Carya, Acer, Liriodendron eastern deciduous forest … perhaps because of the very thin sandy soil perched on sandstone at this site at the edge of a canyon. I have walked this trail several times, but this is the first time my lichen antennae detected Imshaugia aleurites.
Cool, see you found it! Nice, yeah, I almost always find it on pine bark, too.
Created: 2010-04-11 12:54:18 CDT (-0400)
Last modified: 2010-06-09 03:10:17 CDT (-0400)
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