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01-03-2024 18:06

Marc Detollenaere Marc Detollenaere

Dear Forum,On unidentified moss I found some small

01-03-2024 23:06


Bonjour, Sur laissée de mustélidé indeterminé

02-03-2024 12:37

Bernard Declercq Bernard Declercq

Hello,I am looking for a pdf of following paper:Ud

29-02-2024 10:42

Charles Grapinet Charles Grapinet

Hello, Yesterday I found a Periconia on a dead Ae

22-10-2019 00:02

Yannick Mourgues Yannick Mourgues

On Fagus decorticated wood near a stream. Diametr

29-02-2024 16:43

Malcolm  Greaves Malcolm Greaves

Can someone suggest what this might be. It is deve

25-02-2024 19:50

Robin Isaksson Robin Isaksson

Found this one 3-4 times on resin in SwedenAsci IK

24-02-2024 15:15

Louis DENY

Bonjout ForumTrouvé à Belfort (400m altitude), s

27-02-2024 12:55

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia España reco

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Koszka Attila, 31-10-2023 14:55
A beautyful Helotiales, but I don't even know the genus...
Apothecia 2-3 mm in diameter, always with stalk.
Growing on the ground, on dead parts of herbs, always near mosses.
Spores 18-20 x 8-10 um. Asci amiloid.
Any suggestion?
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Hans-Otto Baral, 31-10-2023 15:48
Hans-Otto Baral
Re : Helotiales
You are sure this is on a herb and not on moss? Are the living paraphyses without conspicuous guttulation? The apical ring looks almost like a Sclerotiniaceae, how is the excipulum? The micros remind me a bit of Sclerotinia trifoliorum, with heterogeneous spores in the asci.
Koszka Attila, 31-10-2023 17:14
Re : Helotiales
Many thanks! It's not clrear to me, which is the real host. The fruitbodies are always growing near moss, but not directly between the moss, nor on the living moss.

Living paraphyses hyaline, without guttulation, rarely with sparse deposit on their top.

The ectal excipulum with short, shligthly inflated, rounded cells.

Medullary excipulun reminds textura intricata, but mainly with paralel hyphae.

As you see, the shape and size of freshly ejected spores are extremely variable.
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Hans-Otto Baral, 31-10-2023 18:00
Hans-Otto Baral
Re : Helotiales
Yes, this is clearly S. trifoliorum. It must emerge from small sclerotia without contact to a host. In reality it must have developped in a Fabaceae.

You see very well the heterospory of the asci and the small nuclei in the free spores (they must be four per spore, maybe two in the small spores.
Koszka Attila, 31-10-2023 18:24
Re : Helotiales
Excellent, thanks!