today I re-examined the Unguiculariopsis. It could well be U. robergei which I had before but know that it surely still is a collectiv species.
I would much be interested what the host is - can somebody take a look and give a hint?
Best regards, Lothar

Hi Lothar,
do you have a sample of the Unguiculariopsis? If so, can you send this to me (if so, i will tell you the address via email)?
As your host is not Paraxylaria xylostei, U. robergei is excluded. 

regards
björn

The species where the Unguiculariopsis probably grows on, or at least what you have shown above, is Pseudotrichia minor. This is a species which grows on other pyrenomycetes. You can try a longitudinal section to see how it grows on the pyreno debris below.

It is possible that the host of the Unguiculariopsis is not actual Pseudotrichia minor, but the old pyreno (Botryosphaeria?).

Hello Björn,

first: thank you very much for the determination of Pseudotrichia minor. In fact, I never had this species before although I often read about it. 
Thanks also for the copy of the paper of Hilber (? - or Hilber and Enderle) - I think I have this in the original. Could you give me the data of the whole paper so that I can look up everything in the original?
Interesting that there is a second pyrenomycete below - I did not notice that. 

Second: Surely I can send you a piece of my collection (Werderstr. 17, Hornberg? - or where should the sending go to ?). It is quite abundant - unluckily it contains of many still quite unripe apothecia, but you will finde some that contain ripe asci.

Are you working with Unguiculariopsis now? An interesting genus. You wirte that it cannot be U. robergei because the host is not Paraxylaria xylostei. Well - why do you think it is sure that U. robergei does not grow polyphagous? There are several genera with very specific species and with others less being so.
In Zhuang (1988 - this is the paper I used, because there is no other - or did I overlook something?)  this host is given (as Amphisphaerella) and a variety coelomyceticola (I once determined and published a specimen with this name from Lower Franconia in Krieglsteiner 1999, with a small drawing and some notes). You could say this is an own species (complex) but where is the evidence? In the Algarve I also found only two apothecia of an Unguiculariopsis I determined as U. robergei (s.l.) too, growing on a ?Ulex-twig in a macchia, I did not note a well-developed host there. 
I also wrote that robergei might be a collective species (see above) - and so it is very well possible or even likely that my specimen is something different compared with the original robergei.
As I wrote, we have only Zhuang and this is surely not satisfactory.

Best regards, Lothar

Hi Lothar,

in fact, we (that means me and Adam Polhorský) try to do something with Unguiculariopsis and Macroskyttea (and actually also Phaeangella, but this is quite a mess currently). In the past few years, I have tried to collect as many as possible, and had a lot of typical specimen of at least 10 different species fitting quite well to the descriptions (like Zhuang 1988). There are multiple additional collections without a name though, some looking similar or quite equal to the officially described species (like U. rehmii, like U. robergei etc).

Check the real U. robergei subsp. robergei in the attached file. I have found this a few days ago on Lonicera sp. with Paraxylaria xylostei.

After seeing many of the species, I came quite early to the conclusion that they might not be polyphagous. The species growing on lichens (13, see some of the articles from Brackel, Zimmermann, Berger & Cezanne, Etayo & Diederich and others) does not seem to be polyphagous in the cases I have seen, but I cannot tell for all. 

The U. robergei subsp. coelomyceticola might be restricted to Septoriella. I cannot exclude polyphagy here, but I would regard any collection similar to coelomyceticola not growing specifically on Septoriella as an own taxa, until genetical evidence. 

If your collection really grows on the Botryosphaeria, this is something new to us. 

I will send you the address by email. Thanks.

Björn

Hello Björn,
thank you for your explanations and the beautiful plate of U. robergei s.str.
A specimen that I determined rehmii I found in Italy, on a hanging twig of Juglans at a standing tree. But it is a scanty collection, without a clear host.
You surely saw my contribution here about U. allantospora on Thyronectria coryli?
http://www.ascofrance.fr/search_forum/79983
Best regards, Lothar