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 on the trunk of a large tree, within 1 m of the ground, near a small stream.
Habitat: Oak-hickory woodland on the western rim of the Cumberland Plateau.
cortex C-, K+ yellow
medulla C-, K-
Characterization: corticolous fringe lichen with
(1) prominent white bristles pointing obliquely outwards from lobe tips and margins
(2) soredia under lobe tips
(3) pure white, cortex-free, fibrous undersurface
Lendemer, 2009, A synopsis of the lichen genus Heterodermia (Physciaceae, lichenized Ascomycota) in eastern North America, Opuscula Philolichenum 6: 1-36
McCune, 2003, Heterodermia in the Pacific Northwest
Sharnoff’s Heterodermia speciosa gallery
CNALH images, description, and locality map, and a larger, interactive locality map.
Voucher specimen: Tennessee, Franklin County, Sewanee, Dotson Point Trail, 15 Mar 2009, Chris Parrish 0006, det. Gary Perlmutter (NCU)
Common name: powdered fringe lichen
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