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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? 

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Little asco accompanying Cal. citrina
Zuzana Sochorová (Egertová), 15-09-2022 06:57
Zuzana Sochorová (Egertová)Hello,
please, what could be this little asco accompanying Calycina citrina on a fallen branch of Salix? Moravia, 250 m a.s.l.
Apothecia max. 0.25 mm, convex, hyaline, sessile.
Asci 30- 33(40) × 6.5-7.6 µm, with croziers, IKI bb, many of them with a Psilachnum-guttule
Ascospores (7.3)7.8-9.9(10.2) × 2.1-2.6 µm, Q = (3)3.4-4.4(4.7). Me = 9.1 × 2.3 µm; Qe = 3.9, OCl = 0-0.5
Thank you, Zuzana
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Zuzana Sochorová (Egertová), 15-09-2022 06:58
Zuzana Sochorová (Egertová)
Re : Little asco accompanying Cal. citrina
more photos
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Lothar Krieglsteiner, 15-09-2022 08:02
Lothar Krieglsteiner
Re : Little asco accompanying Cal. citrina
Hello Zuzana,
I do not know the species (nor the genus), but what I find notable is the presence of a "Psilachnum drop" in the asci. Surely Zotto will say more.
Yours, Lothar
Michel Hairaud, 15-09-2022 08:57
Michel Hairaud
Re : Little asco accompanying Cal. citrina
Hi Suzana, 
Indeed, the ascus guttule and spore shape could match a Psilachnum 
Could you show paraphyses ? are they lanceolate,  with VBs ? 

Amitiés
Michel
Zuzana Sochorová (Egertová), 15-09-2022 09:28
Zuzana Sochorová (Egertová)
Re : Little asco accompanying Cal. citrina
Hi Lothar and Michel,

thank you for your comments.

The guttule also attracted my attention, but wood is a strange substrate for this genus, isn´t it? I was searching also in related genera, but found nothing which would fit well.

I will add photos of paraphyses in the evening or tomorrow (I am at work).

Zuzana
Hans-Otto Baral, 15-09-2022 10:03
Hans-Otto Baral
Re : Little asco accompanying Cal. citrina
Spore shape would also match a Psilachnum actually. But there are no hairs, are there? Wood is not impossible for the genus, long ago I made collections on coniferous wood, but they had hairy apos. The contents of the paraphyses would be interesting indeed.
Zuzana Sochorová (Egertová), 16-09-2022 20:09
Zuzana Sochorová (Egertová)
Re : Little asco accompanying Cal. citrina
Here are two (not very nice) photos of paraphyses. They are hyaline, straight, without VBs, having a rounded apex, apex is 2.2-2.7 micrometers broad.
 And one biguttule ascus as a bonus :-)
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Hans-Otto Baral, 16-09-2022 20:38
Hans-Otto Baral
Re : Little asco accompanying Cal. citrina
On a grass I would have suggested "Helotium" microspis, a difficult complex which is in my Calycellina folder.
Zuzana Sochorová (Egertová), 16-09-2022 21:01
Zuzana Sochorová (Egertová)
Re : Little asco accompanying Cal. citrina
Thank you Zotto, it really looks similar.