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26-03-2024 17:14

Juuso Äikäs

These little black ascos were growing on a dead, d

27-03-2024 22:53

Charles Aron Charles Aron

Hi All,Recently I came across these minute, setose

25-03-2024 13:41

B Shelbourne B Shelbourne

• Hyaloscyphaceae (no VBs), Hyaloscypha: Macro a

25-03-2024 21:27

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, March 2024

26-03-2024 14:37

DAVID MARCOS DAVID MARCOS

Spores (telles qu'elles apparaissent à l'intérie

24-03-2024 08:27

Thierry Blondelle Thierry Blondelle

HiOn Hedera helix fallen branchEcological habitat:

26-03-2024 11:06

michel bertrand

Bonjour, Malgré de nombreuses recherches, je n'a

25-03-2024 14:08

Ursula Kozik

Bonjour et bonne journée, On m'a envoyé une tro

25-03-2024 03:56

B Shelbourne B Shelbourne

• Scuttelinia: Macro and habitat.• S. scutella

25-03-2024 20:21

DAVID MARCOS DAVID MARCOS

Bonjour, je m'appelle David et je débute dans l'i

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Boudiera
Zuzana Sochorová (Egertová), 13-10-2020 20:40
Zuzana Sochorová (Egertová)Hello,
this Boudiera has been collected in South Bohemia, in a meadow with a lot of Hygrocybe species. One group of Boudiera was intermixed with Ramsbottomia macracantha.
Apothecia only to 2.5 mm, pulvinate, purple, sessile.
Ascospores without ornament 21.9-24.6 micrometers (average 23.1 micrometers), spines (2.8)3.1-4.4(4.7) micrometers, at base mostly 0.5-1.6 micrometers, inside asci having a gelatinous sheath. However, in some asci ascospores with much wider spines occur, up to 3 micrometers wide at base.
Asci operculate, arising from simple septa, about 390 micrometers long, 38-42 micrometers broad, 8-spored.
Paraphyses 4.2-7.2 micrometers wide, septate, simple, containing purple pigment, apex enlarged, 10.3-12.9 micrometers.
Medulla t. intricata, up to 230 micrometers thick. Ectal excipulum 70-110 micrometers thick, t. angularis-globulosa.
I would determine it as B. tracheia. Do you agree? Have you also observed such a variable ornament in Boudiera?
Thank you, Zuzana
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Zuzana Sochorová (Egertová), 13-10-2020 20:43
Zuzana Sochorová (Egertová)
Re : Boudiera
some more photos
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Lothar Krieglsteiner, 13-10-2020 20:44
Lothar Krieglsteiner
Re : Boudiera
Hello Zuzana,
if you did not observe free spores (I suggest this because you don`t show them), you cannot conclude how the ripe ornament can be. I remember for instance B. areolata as having very similar spores than yours when unripe, and it becomes ripe quite late.
The common growth with Ramsbottomia shows me that you collected on strongly acid soil. So B. areolata could be a possibility.
But - you should wait until you find enough ripe spores outside the ascus - or look again in your sample in older ascomata.

P.S. Sorry - I did not see your second contribution with free spores. So -... no opinion.
But: yes, I remember very big variation betwenn unripe and fully ripe spore ornaments.
Zuzana Sochorová (Egertová), 13-10-2020 21:20
Zuzana Sochorová (Egertová)
Re : Boudiera
Hello Lothar, 
in the beginning I really had no free spores, but I let the fungi in a fridge for several days and obtained them. The measurements I give are made on free spores. 
I know B. areolata, have collected a rich population in a former kaolin quarry in Moravia.
I have a possibility to sequence the find, but it probably woudn't help, because only minority of the species are in GenBank. Also, there are two specimens of B. dennisii and one of B. tracheia, but this B. tracheia is 100% identical with one of those B. denisii and only 96.77% with the second one. Identity between the two specimens of B.denisii is 96.91% (therefore, at least one collection must be identified wrongly).
Z.
Lothar Krieglsteiner, 14-10-2020 08:10
Lothar Krieglsteiner
Re : Boudiera
Hello Zuzana,
thanks for the information. I only found areolata and acanthospora (on limestone), so I cannot contribute something to your fungus. 
Marvellous find(s)!
Yours, Lothar