Observation 34217: Usnea subscabrosa Nyl. ex Mot.
When: 2010-02-20
Herbarium specimen reported

Notes: Location: 35°12’45.15"N 85°53’47.26"W el. 586 m, Sewanee-St.Andrew’s Trail.

Substrate and habitat: Growing with Ramalina on dry sandstone rock faces at the base of a 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 (very faint trace of yellow visible on filter paper), CK+ yellow (immediately), Pd-
soredia: CK+ yellow, Pd+ bright orange
medulla: CK+ dingy pink (slowly), Pd+ bright orange

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

Voucher specimen:
United States, Tennessee, Franklin County, Sewanee, Sewanee-St.Andrew’s Trail. 20 Feb 2010. Chris Parrish 0064, det. James C. Lendemer (NY).

Common name: horny beard lichen

Species Lists

Images

79753
Usnea subscabrosa (center), with Ramalina petrina
79754
Usnea subscabrosa (on the right), with Ramalina petrina (on the left)
79756
branch x-section, 63x
79758
soredia and isidiomorphs, 16x
79759
soredia and isidiomorphs 25x
79760
soredia and isidiomorphs, 32x
79761
soredia and isidiomorphs, 32x
79762
soredia and isidiomorphs, 50x
79763
soredia and isidiomorphs, 50x
79764
soredia and isidiomorphs, 50x
79770
holdfast, 25x

Proposed Names

85% (1)
Eye3 Eyes3
Used references: By comparison with MO Observation #20520. Voucher specimen identified by James C. Lendemer (NY).

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2010-02-26 21:02:34 PST (-0800)
Last modified: 2010-06-08 23:37:24 PDT (-0700)
Viewed: 84 times, last viewed: 2016-11-06 05:06:07 PST (-0800)
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