Observation 11530: Candelariella antennaria Räsänen
When: 2008-06-06
Herbarium specimen reported

Notes: 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.)

Images

22793
at 30x
22794
at 30x
22795
apothecial section, in water, at 400x
22796
apothecial section, in water, at 400x, cross-polarized
22797
ascus, in water, at 1000x, clearly showing 8 spores

Proposed Names

58% (1)
Eye3 Eyes3
Used references: Nash’s Sonoran Flora
Based on microscopic features: 8 spores, width/shape of paraphyses

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2008-09-24 18:14:57 CDT (-0500)
Last modified: 2008-09-24 18:14:57 CDT (-0500)
Viewed: 26 times, last viewed: 2016-10-26 23:55:35 CDT (-0500)