[Dominique C]

Hi John, thank you for your time, effort and the great spore pics plus associated info. As discussed, Hymenopsis typhae in E&E fits the larger of the two species very well.

Your link http://www.asturnatura.com/fotografia/setas-hongos/hymenopsis-typhae-fuckel-sacc/4401.html shows examples which have not ‘opened’. This link http://www.ascofrance.com/recolte/2558/coelomycetes-hymenopsis-typhae is a little more in keeping with the illustration in E&E and the pics below. All of the references are consistent when it comes to the conidia.

First pic shows examples yet to ‘open’, the second some ‘open’ with a ‘groove’.
This collection was made July 13th 2014 just north of Newton Stewart NX4068 VC73 (first Scottish record?).

Unless someone wishes to make another suggestion I am inclined to record it as Hymenopsis typhae. Only 24 records in BMS database and 10 on CATE2 (mostly recorded by the Ellis family), neither has a record for Scotland (how fortuitous you mentioned the asco course)!

I haven’t given up on the little one yet.

Cheers

[Dominique C]

Thanks Keith for the link. Is there a consensus that it is P. obscura? I would like to add it to Ron’s list. Cheers

[Dominique C]

Is it possible for an author to edit their own post after posting, if so how? Interesting, I have been able to edit this post but not the first (hence this additional comment).

[Dominique C]

Hi John

Thanks for this. Unfortunately, unless these are conidial spores(?) they do not match P. obscura or P. luzulae (the two species in E&E on wood rush). Nor do they match P. poarum. Info on P. obtusa is proving elusive (two further species which have been recorded by the BMS on wr). Of these four rusts I have found info on three of them and they all have septate spores.

http://www.fieldmycology.net/FRDBI/assoc.asp
http://www.sewbrec.org.uk/content/attachments/Rust%20fungi.pdf.

One further thought; is this one of those species with the potential to produce as many as four different types of spore?

It should be noted the finder was Gordon Beakes (Plankey Mill).

Since John asked me to post this he has reminded me of uredospores. I had mistakenly concentrated on the teliospores.

Of note, no matter how good E&E is it does not list every species recorded on any given plant.

• This reply was modified 8 years, 10 months ago by Dominique C.

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