When: 2016-12-25

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

Who: zaca

No specimen available

Notes:
Growing osliceous rock.
One or two species at the center of the photo? the thallus is common but the colour and the apothecia seem slightly different from above to bottom. Let’s wait to see if the microscopy reveals any difference.

Images

Microscopy: from an apothecium taken from the upper part;
Microscopy: from an apothecium taken from the bottom part;

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Comments

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Again in trouble with Rhizocarpon:
By: zaca
2016-12-27 14:50:19 CST (-0500)

The microscopy of both apothecia (one taken from the upper part and the other from the bottom part) produced similar results concerning the chemistry: K-. On the other hand, the spores are similar in dimensions, but the morphology is not exactly the same. Could belong to different species, but the key in the British Flora doesn’t give many options. So, I have to return to the microscopy, whenever possible.