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When: 2008-06-06

Collection location: The Hogs Back, Garfield Co., Utah, USA [Click for map]

Who: Jason Hollinger (jason)

Specimen available

crust lichen, on pinyon bark
THALLUS: missing or pale grayish-yellowish
ALGAE: green
APOTHECIA: tiny (less than 0.5 mm), clustered, lecanorine, yellow-orange with yellower rims, plane, orangish-pruinose, epihymenium yellow-orange granules POL+ golden piled thickly on top, hymenium clear, hypothecium clear; paraphyses club-shaped and often branched at tips, sub-moniliform in some, 5.0+/-1.3 µm (N=14) wide at tip
SPORES: 8 per ascus (checked about 10-12 asci), simple, clear, ellip, 15+/-1 × 6.4+/-0.6 µm (N=15)

This has apparently been called C. aurella in North America, but Westberg separates this species (C. antennaria) based on lack of yellow thallus (?) and broader club-shaped paraphyses (-vs- sub-cylindric). Pretty subtle if you ask me. The difference is up to 3.5 µm in C.aurella, and up to 7 µm in C. antennaria. (Also it seems C. aurella is usually found on rock.)


at 30x
at 30x
apothecial section, in water, at 400x
apothecial section, in water, at 400x, cross-polarized
ascus, in water, at 1000x, clearly showing 8 spores

Proposed Names

58% (1)
Used references: Nash’s Sonoran Flora
Based on microscopic features: 8 spores, width/shape of paraphyses

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= Observer’s choice
= Current consensus


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