Observation 10258: Buellia chloroleuca Körb.
When: 2008-06-24
Herbarium specimen reported

Notes: crustose lichen, on juniper wood fragment
THALLUS: light gray, thin, rimose, K+ weak yellow, KC-, C-
APOTHECIA: black, lecideine; rim prominant throughout, smooth, even, black to brownish under LM; epihymenium dark brown-black, K-; hymenium clear, with POL+ white streaks (inspersed presumably); hypothecium dark brown
SPORE: 8 per ascus, brown almost immediately, elliptical, often bent, 2 cells with one often larger, smooth, thick-walled, septum same thickness as walls, 17-24 × 7.9-9.1 µm (Q=1.8-2.8) (N=3), walls 1.3-1.4 µm thick

No, this is NOT inspersed: the hymenium would be obscured if it were. Despite the C- reaction, I’m convinced this is the more common B. chloroleuca, not B. disciformis (latter is also not supposed to have convex discs, which is definitely not the case for the material I collected here).

Images

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19113
magnification 30x
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magnification 30x
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Apothecial section, in water, at 100×.
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Spores, in IKI, at 1000×. These are a bit longer than they should be… but they sure are purty, aren’t they?
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Proposed Names

58% (1)
Eye3 Eyes3
Used references: Nash’s Sonoran Flora
-29% (1)
Based on chemical features: C- thallus

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2008-08-31 12:23:46 PDT (-0700)
Last modified: 2008-09-01 13:59:49 PDT (-0700)
Viewed: 36 times, last viewed: 2016-05-08 19:15:16 PDT (-0700)