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19-08-2022 22:26

Juuso Äikäs

A few years ago I found a group of olive-brown fru

19-08-2022 19:05

Stefan Jakobsson

On a petiole of a leaf of what seems to be Populus

09-08-2022 20:06

Stephen Mifsud Stephen Mifsud

I have found an interesting aspergillus on flowers

13-08-2022 17:18

Stephen Mifsud Stephen Mifsud

I assumed these are weak colonies of Neurospora on

18-08-2022 17:50

Thomas Læssøe

https://svampe.databasen.org/observations/10283042

10-08-2022 15:45

Pierre-Yves Julien

Récolte le 31/07/2022 – Ozoir-la-Ferrière (77)

02-08-2022 17:48

Pierre-Yves Julien

Récolte le 31/07/2022 – Ozoir-la-Ferrière (77)

16-08-2022 20:07

Bernard Declercq Bernard Declercq

Good evening,Who could be so kind to supply me fol

07-01-2014 23:04

Michel Hairaud Michel Hairaud

Bonjour à tous, Hi to all. This tiny bright yell

16-08-2022 15:50

Thomas Læssøe

https://svampe.databasen.org/observations/10283169

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Stalked Asco
Malcolm Greaves, 25-08-2016 16:12
Malcolm  GreavesThis was found in an area of woodland damaged by tree felling.
Pale orange, I thought it might have been a Scutellinia, about 5mm across with a stalk, mostly submerged, 8mm long.
The asci tips were blued with Lugol and the spores were 10.5 x 4.5µ.
Can anyone suggest a name or group?
Thanks
Mal
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Enrique Rubio, 25-08-2016 16:55
Enrique Rubio
Re : Stalked Asco
The pore (inoperculate asci) blued by IKI excludes a Scutellinia. This could be an Hymenosyphus species
Hans-Otto Baral, 25-08-2016 17:00
Hans-Otto Baral
Re : Stalked Asco
Or more probably a Moellerodiscus.
Malcolm Greaves, 25-08-2016 18:20
Malcolm  Greaves
Re : Stalked Asco
Is there anything I could look for to confirm this suggestion?
Mal
Hans-Otto Baral, 25-08-2016 21:12
Hans-Otto Baral
Re : Stalked Asco
yes, different things:
For the genus I am sure, but for the species, which is almost impossible to determine, would be good to know
- the substrate (a leaf? which plant?)
- excipulum of globulosa?
- asci with croziers?
- living paraphyses with large yellowish refrctive vacuole?
- more measurements of spore size

There have been quite a few postings in Ascofrance about this genus. Currently one can identify M. lentus, but the situation ist much more coplicated.

Zotto
Enrique Rubio, 25-08-2016 21:31
Enrique Rubio
Re : Stalked Asco

Hi Zotto


What's the typical host for M. lentus?

Hans-Otto Baral, 25-08-2016 21:41
Hans-Otto Baral
Re : Stalked Asco
The literature says it is plurivorous. This may be, but not everything is M. lentus.
Can't remember which is the type substrate.
Malcolm Greaves, 25-08-2016 21:52
Malcolm  Greaves
Re : Stalked Asco
Thanks Zotto. I will see I can find the details you mentioned.
Mal
Enrique Rubio, 26-08-2016 00:32
Enrique Rubio
Re : Stalked Asco
Thanks, Zotto
Michel Hairaud, 26-08-2016 09:21
Michel Hairaud
Re : Stalked Asco
Bonjour Zotto, Malcolm & Enrique,

in Dumont 1976 Scleritiniaceae XI - On Moellerodiscus (= Ciboriopsis) we read :
Holotype. -Ceylon, Peradeniya, Thwaites 104, unidentified leaves, Nov 1887 (K).

In Berkeley & Broome 1873 (75) : on dead leaves, capsules, 1c. Nov. 1867

Amitiés
Michel
Malcolm Greaves, 26-08-2016 14:33
Malcolm  Greaves
Re : Stalked Asco
Zotto
The substrate is difficult because although it was close to oak (with a leaf in the photo) there had been extensive tree felling of conifer and there looked to be needles in the soil that was collected with the specimen.
The excipulum was globular.
I could see no sign of croziers.
The paraphyses had a refactive vacuole but not sure it was yellow.
The spores were between 9 - 11 x 4 - 4.5
I hope this helps.
Mal
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Hans-Otto Baral, 26-08-2016 21:13
Hans-Otto Baral
Re : Stalked Asco
Clearly Moellerodiscus. I am quite sure it has croziers, the ascus base looks so.
Your last photo shows the vacuoles.
So I would file it as M. lentus. But I see the spores are too broad, M. lentus is more around 2.5-3.5 µm. Sorry, but it is a crazy genus.
Malcolm Greaves, 26-08-2016 23:54
Malcolm  Greaves
Re : Stalked Asco
Thanks Zotto
I will record as Moellerodiscus lentus but make a note that the spores are too wide on current understanding.
Mal