Notes:
Crustose lichen, on granite.
THALLUS: yellow, mounded, lumpy, continuous
APOTHECIA: abundant, lecanorine, (0.34)0.48+/-0.11(0.76) mm (N=23); rim thalline, lumpy, yellow, lighter than disc; disc dingy yellow, to 1 mm or so, flat to slightly convex, not pruinose; epihymenium orange-brown, POL+ golden granules abundant and inspersing into hymenium; hymenium clear; hypothecium clear
SPORES: 8 per ascus, oblong, clear, smooth, (13)16+/-1.5(19) x (5.4)6.5+/-0.5(7.3)um (Q=(2.2)2.5+/-0.2(3.0)) (N=13)

Images

at 30x
Apothecial section, in water, at 100×.
Apothecial section, in water, at 100x, cross-polarized.
Spores in ascus, in water, at 1000×.

Proposed Names

87% (1)
Used references: Nash’s Sonoran Flora
Based on microscopic features: 8 spores per ascus

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= Observer’s choice
= Current consensus

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