Sunday 19 April 2015

Opegrapha varia

The lirellate learning curve goes on and this lichen was no different. This specimen was found on the base of a tree trunk in a car park. I always try and make a visual identification before section to see how many I get right and on this occasion gave the ID as Opegrapha sp possibly atra.
In section the spores were multi-septate narrowing down to Opegrapha, Graphis and Enterographa. The ascospores measured twice the width of the ascospores in Opegrapha atra from the previous post. The exciple didn't change much in K but there was a subtle reaction towards K+ brown.

Opegrapha varia

Opegrapha varia

Opegrapha varia spores

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