Observation 210179: Buellia disciformis (Fr.) Mudd
When: 2015-07-11
Who: zaca
No herbarium specimen

Notes: Growing on bark.
The genus Lecidella is only tentative and due to the similarity that this specimen has with L. elaeochroma, but with a much paler thallus.

Images

538875
Part of the next photo;
538874
539191
Microscopy: Sections;
539192
Microscopy: Hymenium and Asci (in Floxine);
539193
Microscopy: Hymenium, asci and spores.

Proposed Names

29% (1)
Recognized by sight
58% (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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Microscopy added.
By: zaca
2015-07-16 20:34:04 CEST (+0200)

Here are some of the features observed in the microscopy:
Epythecium and Hypothecium brown;
Hymenium more or less hialine with a grey-green shade, fully inspersed with small oil drops;
Asci of Lecanora type, 8-spored;
Spores grey to brown at maturity, 1-septate, the older ones with the ends thinner and paler, with dimensions:
(15.3) 18.9 – 26.2 (27.2) x (6.2) 6.8 – 8.2 (9) µm
Q = (2) 2.4 – 3.4 (3.6) ; N = 32
Me = 21.9 × 7.7 µm ; Qe = 2.9

Created: 2015-07-15 23:05:47 CEST (+0200)
Last modified: 2015-07-16 20:35:31 CEST (+0200)
Viewed: 21 times, last viewed: 2016-04-29 17:42:30 CEST (+0200)
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