28-04-2024 18:05
Bernard CLESSE
Bonsoir à toutes et tous,J'ai trouvé ce matin ce
24-03-2024 08:27
Thierry Blondelle
HiOn Hedera helix fallen branchEcological habitat:
26-04-2024 10:07
Mathias Hass
Hello, Does anyone know what this is? Found on J
24-04-2024 21:54
éric ROMERO
Bonjour, J'ai trouvé ce Lasiobolus sur laissées
23-04-2024 15:18
Lothar Krieglsteiner
... but likely a basidiomycete. I hope it is o.k.
23-04-2024 13:17
Edouard Evangelisti
Bonjour à tous, Je viens de récolter ce que je
23-04-2024 21:49
Ethan CrensonHello all, A friend recently found this orange as
22-04-2024 11:52
Zuzana Sochorová (Egertová)
Hello,I made a loan of a collection of Microstoma
11-01-2022 16:36
Jason Karakehian
Hi does anyone have a digital copy of Raitviir A (
Bonjours tousvenant d'une Angleterre très chaude et très sèche dans la plupart des habitats dans ce domaine . . . . (tout le monde est heureux, je le suis moins!)
I am really determined to try to get to grips with Orbilia from now on and would welcome any help and suggestions during my struggle.
Here is an apricot-coloured collection, found on rather dry decorticated Quercus wood (at a late stage of decay, Nemania confluens close by).
Classic capitate paraphyses (many pigmented) with granular extracellular pigment also (first image).
The asci seem to contain two types of spores (next three images) - I wondered for a long time about Helicogonium but am unsure - are these spores just immature, or aborted, or?
Asci with 'normal' ascospores also present (see last three images). These spores vary from ovoid, through phaseoliform to reniform, so I am thinking Orbilia coccinella / eucalypti (spores small 2.5-3.5 x 1.7-2µm).
Am I well off the mark?
Cordialement
Chris
I think this is O. leucostigma/delicatula. Mature ascospores are allantoid and warted (you can see them quite clearly on some of your photos). What you consider normal ascospores on the last three micro photos looks like immature spores to me.
Best wishes
Gernot
I have so much to learn here and insights like that are priceless; so this represents the mature spore stage then? (right hand ascus).
best wishes
Chris
this is typical O. leucostigma = O. delicatula (= xanthostigma s. auct. p.p.).
Normal spores are consistently reniform (cashew-shaped) and warted. The other seem abnormal spores though inside living asci.
The paraphyses contain in their lower part orange carotenoids, and I assume that the extracellulapr granules escaped during preparation by breaking the cells.
Is it from your home town?
Zotto
collection details are
on very rotten decorticated Quercus branch lying on the ground
Broadhead Clough, near Mytholmroyd, West Yorkshire
53°43'16.79"N 2° 0'13.17"W
207 metres O.D.
12th July 2013
regards
Chris