Notes:
on exposed granitic outcrop in chaparral around 2000’

Images

apothecial section in water at 100x
apothecial section in water at 100x, cross-polarized
thalline margin and spore-filled ascus in water at 400x
spores in ascus in water at 1000x

Proposed Names

87% (1)
Used references: Lichen Flora of the Greater Sonoran Desert Region, Vol. III. 2007. treatment by K. Knudsen.
Based on microscopic features: many spores per ascus, algal layer thick and continuous, thallus pitted, apothecia heavily pruinose
Based on chemical features: cortex and epihymenium C+r

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= Observer’s choice
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