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29-06-2022 08:43

Mirek Gryc

Hello everyone Because the mushroom seems to be v

23-06-2022 08:52

Josep Torres Josep Torres

Hola.Un pequeño discomiceto sobre la superficie d

29-06-2022 13:19

Andrew N. Miller Andrew N. Miller

Does anyone have this as a PDF?Munk A (1965). On s

28-06-2022 20:12

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I repeatedly collect a foliicolous Ascobolus

28-06-2022 22:07

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I would welcome some help with these little

29-06-2022 10:29

ruiz Jose antonio

Hola a todos,recientemente he mandado a analizar e

27-06-2022 15:49

Andgelo Mombert Andgelo Mombert

Bonjour, Sur branche morte attenante d'Ulmus mino

28-06-2022 21:27

Hardware Tony Hardware Tony

Hopefully there aren't too many 6-spored sps. to s

27-06-2022 11:46

Bernard Declercq Bernard Declercq

Dear all,I am looking for a pdf of following paper

27-06-2022 11:14

Laurent Bonneau Laurent Bonneau

bonjour, sur branchette de feuillu au bord d'un

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Cistella (?) on dying leaves of Galium saxatile
Marcus Yeo, 19-05-2022 22:05

Earlier today I found a minute discomycete growing on dying leaves of Galium saxatile on a grassy streambank in the Lake District, NW England. Details as follows:


Apothecia 80-200 µm diam; with a short stalk; grey to pale greenish-blue (dark greenish-blue at the base of the stalk).
Asci 30-40 x 5-7 µm; 8-spored; apex blue in Lugols.
Ascospores fusiform; hyaline; 0-septate; 9-11 x 2-2.5 µm; 2 large oil bodies.
Paraphyses sparse; narrowly cylindrical; about as long as asci.
Hairs more or less cylindrical or slightly tapering to rounded apex; <40-45 x 2-3 µm; verruculose.


Some images attached.


I rarely look at discomycetes and I'm struggling to put a name to this specimen. Possibly a Cistella? I'd be grateful for any help anyone can provide.


Thanks
Marcus

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Hans-Otto Baral, 19-05-2022 22:15
Hans-Otto Baral
Re : Cistella (?) on dying leaves of Galium saxatile
oh my dear, I do not know. Such bluegreen colour is meaningful. I don't think in a Cistella. A Hyphodiscus perhaps? But on that substrate?

How large were the apos, and were they sessile? You doi't habe a macro?

Probably a sparse record?

The ectal excipulum gelatinized?
Marcus Yeo, 19-05-2022 22:40
Re : Cistella (?) on dying leaves of Galium saxatile
Hi Zotto

Thanks for replying.

Apothecia were 80-200 µm (mostly towards the lower end of the range) & were distinctly stalked. I don't think the ectal excipulum was gelatinised.

No macro images I'm afraid. 

The specimen is indeed sparse but if I get the chance I'll revisit the site & try to find some more.

Marcus
Hans-Otto Baral, 19-05-2022 22:45
Hans-Otto Baral
Re : Cistella (?) on dying leaves of Galium saxatile
My database says that Boudier described a Trichopeziza galii. But that was on stems, was probably not greenish, and is said to be C. grevillei.
Kosonen Timo, 20-05-2022 07:48
Kosonen Timo
Re : Cistella (?) on dying leaves of Galium saxatile
Very interesting!

What about Incrupila? -Then again, verrucose is not = thick crystalline crust on the hairs and hairs seem aseptate here as well. Green-blue colours certainly a rare character. Somewhere around Cistella or Hyphodiscus would be my guess (too). It doesnt look like a Hyaloscyphaceae (s str) or Lachnaceae (s lat), --kind of too fragile (?) for the latter. 

Timo
Lothar Krieglsteiner, 20-05-2022 09:40
Lothar Krieglsteiner
Re : Cistella (?) on dying leaves of Galium saxatile
what about Chlorociboria aeruginella?
Hans-Otto Baral, 20-05-2022 10:02
Hans-Otto Baral
Re : Cistella (?) on dying leaves of Galium saxatile
I thought this also but I remembered the spores with smaller LBs and the hairs smooth. The latter isn't true, there can in fact be a rough deposit on them. So it seems you are right, Lothar!
Lothar Krieglsteiner, 20-05-2022 10:35
Lothar Krieglsteiner
likely Chlorociboria aeruginella (s.l.?)
I found this species only once in my life, although I repeatedly saw blue-green stains on herbaceous plants including Filipendula that could have been caused by this species. Surely it is no Chlorociboria ...


Hans-Otto Baral, 20-05-2022 10:43
Hans-Otto Baral
Re : Cistella (?) on dying leaves of Galium saxatile
But it is a Chlorociboriaceae, related to the lignicolous Chlorociboria halonata and "Hyphodiscus chlorociborioides".
Lothar Krieglsteiner, 20-05-2022 14:58
Lothar Krieglsteiner
Re : Cistella (?) on dying leaves of Galium saxatile
vielen Dank, Zotto!
Marcus Yeo, 21-05-2022 11:30
Re : Cistella (?) on dying leaves of Galium saxatile
Lothar - I think you must be right. Thank you!

The apothecia in my collection are very small and the turquoise colour isn't very well developed but in other respects it fits descriptions of Chlorocibora aeruginella.

Marcus