Observation 203976: Miriquidica Hertel & Rambold

When: 2015-05-02

Collection location: Serra de São Mamede, Portugal [Click for map]

Who: zaca

No specimen available

Very distinctive crustose lichen, growing on siliceous rock, whose thallus is surrounded by that Rhizocarpon bolanderi (I believe); Curiously its thallus is of the same type than the Rhizocarpon (mainly constituted by squamules) but has different apothecia.


Other specimen nearby;
Other specimen nearby;
Microscopy: Sections;
Microscopy: A thinner section, epithecium and exciple;
Microscopy: Asci;
Microscopy: Spores and paraphyses.

Proposed Names

29% (1)
Recognized by sight
58% (1)
Eye3 Eyes3
Recognized by sight: See the comments

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
New specimens and new data added.
By: zaca
2015-09-23 08:06:37 PDT (-0700)

In the sequel of the conclusions got for observation 203979, I also tryed the microscopy of this specimen. By comparison of the microscopic results, seems clearly that it can also belong to the same genus – Miriquidica, if not of the same species; the sections are of the same type and the spores also are simple and hialine, now with the following dimensions:
(10.2) 10.7 – 13.9 (14.4) x (4.5) 4.8 – 5.8 (6) µm
Q = (1.8) 2 – 2.7 (3.1) ; N = 23; Me = 12.2 × 5.2 µm ; Qe = 2.4 .
However, in the first photo the morphological features seem to be a bit different here: the pruinose apothecia are more or
less concolour with the areolate brown thallus, which is not squamulose (at least away from the margin), and the margin of
apothecia is only slightly paler than the disc. But, the other photos just uploaded also show that the thallus can be of squamulose type like in observation 203979 and the apothecia still pruinose, seeming to be concolour with the thallus.
Therefore, I think this is also Miriquidica and maybe also M. deusta.
Of course, all this can be a wishful thinking!

Created: 2015-05-06 14:47:48 PDT (-0700)
Last modified: 2015-09-23 15:40:25 PDT (-0700)
Viewed: 48 times, last viewed: 2018-02-20 13:23:01 PST (-0800)
Show Log