Observation 105119: Lecanora pacifica Tuck.

When: 2012-08-03

Collection location: San Gabriel Peak, San Gabriel Mountains, Los Angeles Co., California, USA [Click for map]

34.2543° -118.1045° 1577m

Who: Jason Hollinger (jason)

Specimen available

HABITAT edge of oak forest on steep north slope; SUBSTRATE smooth Quercus wislenzii? bark; ASPECT mostly open; NOTES thin verrucose grayish crust over white background, K+y C- KC- P~y weak UV- 350nm or UV+ on white background, scattered round convex apothecia, disk pale yellow to beige to pale red-brown lightly pruinose, rim smooth even becoming very thin shiny-waxy, epihymenium faint brown clearing in K with sparse coarse POL+ granules on top clearing in K, hymenium hyaline POL- not inspersed, amphithecium finely POL+ throughout clearing in K with coarse POL+ crystals in lower cortex not clearing in K, cortex ~20-30 µm on side to 50-80 µm below; SPORES 14-20 × 6-9 µm.


Apothecial section, in K, at 100×.
Apothecial section, in K, at 100x, cross-polarized.

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Created: 2012-08-13 20:48:09 CDT (-0400)
Last modified: 2012-08-13 20:48:11 CDT (-0400)
Viewed: 16 times, last viewed: 2018-01-29 09:23:14 CST (-0500)
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