Collection location: Sewanee, Franklin Co., Tennessee, USA [Click for map]
Location: 35°13’49.26"N, 85°57’47.14"W, el. 575 m, Dotson Point Trail.
Substrate: Growing in many small patches on the trunk of a large tree, mostly within 1.5 m of the ground.
Habitat: Oak-hickory woodland on the western rim of the Cumberland Plateau.
Characterization: corticolous, squamulous lichen with
(1) bright orange medulla
(2) lower cortex black in the center of thallus, white under marginal lobes
(3) long black rhizines with white tips
(4) soredia at and underneath lobe tips
cortex C-, K-, KC-
medulla C+ dissolves the orange medulla color, K+ black immediately
Voucher specimen: Tennessee, Franklin County, Sewanee, Dotson Point Trail, 15 Mar 2009, Chris Parrish 0007, det. Gary Perlmutter (NCU)
Common name: orange-cored shadow lichen
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