CA, Southern California, 20080826
Madison Heights, lichens and fungi. 

Rinodina laevigata [] [voucher] 

Base of shamel ash in front of 874 S Oakland.

GEN

crustose lichen, on ash bark

THAL

lt-med gray-green, scabrid, dull, K-

APO

lecanorine disk   black, matte, epruinose, flat to sl convex rim   dk green like thallus, crenulate, barely raised, persist, filled with algae, cortex thin and uniform epi brown due to paraphyses tips, hymen clear, hypo clear para   simple, abruptly clavate, tips with brown caps

SPORE

clear then gray then dk brown, ellip, smooth, 2 cell, 8 per ascus uneven walls   apical thickening and angular septum when young, lumina inflating in age, sometimes forcing apical thickening to protrude as a snout, torus present and rarely swelling slightly in K large round bubble inside mature lunina, sometimes curved when young, 14-15x7-8um

No question these are Physcia-type spores (by J.  W.  Sheard's reckoning in Nash).  I'm confident of ID this time around.

Lecanora hagenii [] [voucher] 

GEN

crustose lichen, on ash bark

THAL

verruculose, lt gray, shiny, indistinct margin, K-, C-, KC-

APO

lecanorine, disk pink-brown, most with some whitish pruina at least near margins, plane to contorted, margin verruculose like thallus, abundant algae in marg and under apothecium, cortex thicker below and POL+ white epi   brown, POL+ white bleeding into hymenium, POL+ in K too hymen clear, subhymen clear hypothecium with some small POL+ white crystals that are insol in K   probably contaminants dragged in from cortex during sectioning, paraphyses clear

SPORE

8 per ascus, ellip, clear, smooth, 1 cell, 9-11x4.5-5.5um

Could've sworn this was different, but I guess not.

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