Observation 213583: Buellia disciformis (Fr.) Mudd
When: 2015-08-15
Who: zaca
No herbarium specimen

Notes: Growing on bark.

Images

549355
549356
551401
Microscopy: Sections;
551402
Microscopy: Hymenium;
551403
Microscopy: Asci and spores.

Proposed Names

29% (1)
Recognized by sight
58% (1)
Eye3 Eyes3
Used references: British Flora
Based on microscopic features
Based on chemical features: K+ yellow on thallus

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Microscopy added.
By: zaca
2015-08-29 10:45:35 PDT (-0700)

Similar to the one in observation 213450, more mature, has a more cracked areolate thallus also with a brown prothallus and some the apothecia are clearly pruinose. Microscopically, however, the features are the same. The chemistry is also similar: K+ yellow. Therefore, I believe it is of the same species. For the spores I got the following dimensions:
(15.7) 18.1 – 22.7 (25.2) x (6.1) 6.5 – 8.5 (9.7) µm
Q = (2.3) 2.5 – 3.1 (3.5) ; N = 26; Me = 20.8 × 7.5 µm ; Qe = 2.8 .

Created: 2015-08-22 09:50:27 PDT (-0700)
Last modified: 2015-08-29 10:44:43 PDT (-0700)
Viewed: 22 times, last viewed: 2016-06-09 02:28:22 PDT (-0700)
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