Observation 20520: Usnea subscabrosa Nyl. ex Mot.
When: 2009-03-22
Herbarium specimen reported

Notes: Location: 35°13’21.51"N, 85°57’3.86"W, el. 572 m, Rutledge Point Trail.

Substrate and habitat: Growing with Ramalina petrina on dry sandstone rock faces at the base of a major sandstone cliff with southern exposure to direct sun, in oak-dominated eastern deciduous woodland at the western rim of the Cumberland Plateau.

Chemistry:
cortex C-, K+ yellow, KC- (dissolves some yellow)
soredia C-, K+ yellow, KC (+/-) faint dusky yellow at cortex-medulla boundary
[UNC Herbarium determination by Gary Perlmutter: medulla K-, CK-]

In the Ozarks, to the west of here, “about half the collections are on rocks, half on trees” (Harris and Ladd, “Ozark Lichens,” 2005, p.237).

References:
Sharnoff’s Usnea subscabrosa gallery
CNALH images and locality map, and a larger, interactive locality map.

Voucher specimen: Tennessee, Franklin County, Sewanee, Rutledge Point Trail, 22 Mar 2009, Chris Parrish 0030, det. Gary Perlmutter (NCU)

Common name: horny beard lichen

Species Lists

Images

41723
Rutledge Point Trail, 22 Mar 2009
41724
Rutledge Point Trail, 22 Mar 2009
41725
Rutledge Point Trail, 22 Mar 2009
41726
Rutledge Point Trail, 22 Mar 2009
41778
branch and soredia, 10x
41779
branch and soredia, 25x
41780
isidia 25x
41781
soredia and isidia, 50x
41782
soredia and isidia, 50x
41783
soredia and isidia, 50x
41784
soredia and isidia, 50x
41785
soredia and isidia, 50x
41786
soredia and isidia, 50x
41787
soredia and isidia, 63x
41788
soredia and isidia, 63x
41789
soredia and isidia, 80x
41790
branch tip, 16x
41791
branch tips, 50x
41792
reddish patch on stem, 16x
41793
x-section of branch, 100x

Proposed Names

28% (1)
Eye3 Eyes3
Used references: Brodo, Sharnoff, Sharnoff, p.725-726; Harris and Ladd, “Ozark Lichens,” 2005, pp.235-237
Based on chemical features: UNC Herbarium determination by Gary Perlmutter: medulla K-, CK-

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2009-04-23 15:39:49 CDT (-0400)
Last modified: 2009-04-23 15:39:49 CDT (-0400)
Viewed: 126 times, last viewed: 2016-09-11 23:09:25 CDT (-0400)
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