Observation 19465: Heterodermia speciosa (Wulfen) Trevisan
When: 2009-03-15
Herbarium specimen reported

Notes: 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.

Chemistry:
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

References:
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

Species Lists

Images

39289
Dotson Point Trail, 2009_03_15
42359
thallus, 12.5x
42360
thallus, 12.5x
42361
branching rhizines, 20x
42362
branching rhizines, 25x
42363
branching rhizines, 25x
42364
branching rhizines, 32x
42365
lobe margin, 25x
42366
lobe margin, 25x
42367
lobes, 20x
42368
surface texture, 80x
42369
soredia under lobe margins, 7.1x
42370
soredia under lobe margins, 40x
42371
soredia under lobe margins, 50x
42372
soredia under lobe margins, 50x
42374
soredia under lobe margins, 50x
42375
soredia under lobe tips, 20x
42376
soredia under lobe tips, 40x
42377
soredia under lobe tips, 40x
42378
soredia under lobe tips, 50x
42379
x-section of white medulla, 100x
42380
undersurface, pure white, fibrous, cortex free, 25x
42381
undersurface, pure white, fibrous, cortex free, 50x
42382
undersurface, pure white, fibrous, cortex free, 63x

Proposed Names

28% (1)
Eye3 Eyes3
Used references: Brodo, Sharnoff, Sharnoff, pp.339-340

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2009-03-16 22:04:35 PDT (-0700)
Last modified: 2009-03-16 22:04:35 PDT (-0700)
Viewed: 378 times, last viewed: 2017-02-17 11:04:14 PST (-0800)
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