Apothecia are up to 1mm in diameter, brownish black, roughened and with a raised margin when dry. Cushion shaped when hydrated.

Spores (from spore drop) are hyaline, mostly 3-septate, some 4-septate, fusiform and some are a bit irregular shaped. Some spores are shorter, wider and tear-drop shaped.  Oil droplets are present.  They measure 14.7 - 27.9 (35.6) x 3.5-5.4µm.

Asci 68-87 x 8-11.1µm, no croziers, IKI-

Paraphyses branched, septate, brown at the ends and swollen up to 4-5µm wide.

In Zotto's folder for Durella, this seems to match "Durella macrospora IKI-". The spores in my collection are somewhat longer.  But I notice that they are similar in that the spores are quite irregularly shaped and some are quite small and tear drop shaped. 

Thanks,

Ethan

Hans-Otto Baral, 24-03-2022 21:23

Re : Durella

My first idea was also macrospora, but there the paraphysis tips do not carry browmn exudate and possess hyaline refractive resinous matter in the hymenium.

Patellariopsis clavispora is excluded by having a deep blue apical ring and globular excipular cells. I assume your sample has brown porrecta (please check).

Hans-Otto Baral, 26-03-2022 21:24

Re : Durella

This is a good addition!

I cannot see the link, could you tell me?

Hans-Otto Baral, 26-03-2022 22:31

Re : Durella

Ah, I did not have this sequence, although it is in GenBank.

It blasts not very close to the Boston sequence but is identical with it in the ITS, and also ERD 6117 is 100% identical.

The similarity to the amyloid macrospora is 92.3%.

So I was wrong in doubting this to be macrospora. And I do not know if the old type of macrospora was IKI+ or IKI-.