When: 2010-02-20

Collection location: Sewanee, Franklin Co., Tennessee, USA [Click for map]

Who: Chris Parrish (kitparrish)

Specimen available

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.

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

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


Usnea subscabrosa (center), with Ramalina petrina
Usnea subscabrosa (on the right), with Ramalina petrina (on the left)
branch x-section, 63x
soredia and isidiomorphs, 16x
soredia and isidiomorphs 25x
soredia and isidiomorphs, 32x
soredia and isidiomorphs, 32x
soredia and isidiomorphs, 50x
soredia and isidiomorphs, 50x
soredia and isidiomorphs, 50x
holdfast, 25x

Proposed Names

85% (1)
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.

= Observer’s choice
= Current consensus


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Created: 2010-02-26 23:02:34 CST (-0600)
Last modified: 2010-06-09 01:37:24 CDT (-0500)
Viewed: 92 times, last viewed: 2020-06-19 07:37:50 CDT (-0500)
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