Accès membres

Mot de passe perdu? S'inscrire

23-09-2025 13:31

Thomas Læssøe

https://svampe.databasen.org/observations/10534623

15-10-2025 16:39

Edvin Johannesen Edvin Johannesen

These tiny (0.2-0.6 mm), white, pulvinate apotheci

03-10-2025 13:44

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde on Populus

13-10-2025 19:05

Louis DENY

Bonjour forumSur tronc décortiqué de feuillu x,

17-02-2013 21:11

Peter Welt Peter Welt

Jamoni, P.G. 1998. Un nuovo discomicete coprofilo

11-10-2025 20:27

Marcel Heyligen Marcel Heyligen

Found on a barked branch, 14 mm in diameter, of Ro

11-10-2025 14:20

Jean-Luc Ranger

bonjour à tous, Je ne vois pas comment l'on peut

09-10-2025 22:14

S. Rebecca

We just had the Bavarian Mycology Conference in Au

10-10-2025 00:49

Ethan Crenson

Hello all, This was found last weekend on a hardw

06-10-2025 15:57

David Chapados David Chapados

Hi, Could anyone help me with this Lophiostoma? 

« < 1 2 3 4 5 > »
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

  • message #72782
  • message #72782
  • message #72782
  • message #72782
  • message #72782
  • message #72782
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