Observation 87696: Buellia De Not.
When: 2012-02-10
No herbarium specimen

Notes: Growing on the trunk of a Mahogany tree, but present on many Ohia trees in the area.

Species Lists

Images

199347
199348
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199476
apothecia cut vertically
199477
apothecia cut vertically – photo taken in bright sunlight

Proposed Names

27% (1)
Recognized by sight
53% (1)
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Recognized by sight

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Eye3 = Observer’s choice
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Comments

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Split rims
By: Jason Hollinger (jason)
2012-02-13 13:35:24 PST (-0800)

Notice that the rims are kind of splitting when you look very close? (Excellent macro photo, by the way!) I think this might be indicative of a carbonized exciple, such as in Sarcogyne. (But that genus only grows on rock, so it’s not that!)

You know, with photos like this, you should be able to see whether the spores are pigmented or not just by cutting an apothecia vertically. You can see quite a bit that way, actually: color of inner exciple, hypothecium, hymenium, spores, even epihymenium in some cases. But it has to be a very high-quality macro, like this one. Could be very helpful.

(Of course, true microscopy is the preferred way to go if you have access to one.)

Created: 2012-02-12 15:10:56 PST (-0800)
Last modified: 2012-02-12 15:46:19 PST (-0800)
Viewed: 58 times, last viewed: 2016-05-01 02:28:02 PDT (-0700)
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