Observation 105088: Lecanora chlarotera Nyl.
When: 2012-08-03
(34.248° -118.1038° 1752m)
Herbarium specimen reported

Notes: HABITAT edge of oak forest on ridge at top of road cut high on north slope; SUBSTRATE Quercus chrysolepis trunk; ASPECT mostly open; NOTES thin verrucose light gray crust, K+y C- KC- P+ pale yellow-orange UV- 350nm, abundant crowded apothecia, disk dark brown to black, rims thin prominent thalline smooth even becoming thinner in age, epihymenium dark brown with coarse POL+ crystals on top clearing in K, hymenium hyaline POL-, hypothecium hyaline POL-, ampthithecium with large POL+ crystals persist in K and fine crystals clearing in K, algae layer somewhat discontinuous, cortex not much basally thickened; SPORES 8 per ascus, simple, smooth, hyaline, ellipsoid, ~13-16 × 7-8 µm.

Primary problem with this identification is that the disks are too dark, but otherwise it matches up.

Images

248985
20120803-215.jpg
Apothecia, at 30x, stacked.
248987
20120803-213.jpg
Margin and apothecia, at 30x, stacked.
248988
20120803-214.jpg
Margin and apothecia, at 30x, stacked.
248989
20120803-212.jpg
Margin and apothecia, at 10x, stacked.
248990
20120803-27.jpg
Blurry one.
248991
20120803-28.jpg
Blurry one.
248992
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Apothecial section, in water, at 100×.
248993
20120803-145.jpg
Apothecial section, in water, at 100x, cross-polarized.
248994
20120803-146.jpg
Apothecial section, in K, at 100×.
248995
20120803-147.jpg
Apothecial section, in K, at 100x, cross-polarized.

Proposed Names

58% (1)
Eye3 Eyes3
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2012-08-13 17:24:06 PDT (-0700)
Last modified: 2012-08-13 17:24:09 PDT (-0700)
Viewed: 10 times, last viewed: 2016-04-15 15:25:00 PDT (-0700)
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