07-05-2024 00:04
Ethan CrensonA friend found these black gelatnous cups on a twi
06-05-2024 10:02
François BartholomeeusenGood morning,At the end of an excursion in De Zegg
05-05-2024 09:59
Gernot FriebesHello,I failed to identify this anamorph, which gr
19-04-2015 20:20
Enrique RubioHi again Could you help me with this paper? NANN
30-04-2024 16:22
François BartholomeeusenDear forum members,On April 25 2024, I found one f
03-05-2024 18:04
Riet van OostenHello, Found by Laurens van der Linde on Rubus fr
Its when I examined the reproductive part under the microscope I got confused. in my limited knowledge I interpreted that the fungus is composed of a densely packed layer of tubes which are likely basidia but perhaps ascii, each forming forming ONE terminal spore. I don't know of any basidiomycete which is monosporous, while I wonder if ascomycota form spores this way since usually they are inside an ascus. The remaining alternative is some Myxo (size and habitat OK) but still I'm not sure there were no obvious signs of a plasmodium.
Well the what-so-called basidium is 16-19 x 5um, cylindrical with sinuated-irregular margins, while the spores are 7-8 x 3-3.5 in size, narowly lachrymoid with an acute-pointed end (attachment end) and with few small oil bodies, probably with a smooth surface.
See captions for further details
you can forget the idea of this being a myxomycetes. Myxos do not have septas. Some imperfect fungus perhaps...
Marja
I agree, it looks like an hyphomycete.
Good luck to find a name !
Alain
So is there a big possibility that this is not even an Asco? If you look closely at the 5th pic of the second post I think that those stuctures are clamp junction, and so, this would exclude ascomycetes as somewhere I read that Asco cannot have clamp junctions. Thanks alan , I need lots of luck - so let's check Hyphomycete !
Penicillium claviforme
Look here one before last photo:
http://www.tub-collection.com/pic.html
What I think I see is a Dematiaceous Hyphomycete with conidiogenous cells polyblastic, integrated maybe sympodial, denticulate.
un saludo
Angel
In fact, apart the lack of spores in chains, I was also concerned with the shape of the spores which in penicllium are almost always sugglobuar or globular, but this fungus have narrowly-lachrymoid spores. I take your suggestion and discard Penicillium. Any other suggestions are welcomed
I am still trying to identify this fungus, at least genus level. I have drawn a representative diagram of what I think I am seeing. See images.
I hope that the stipe structure can be regarded as a coremium
The best guess is somewhere within Stilbaceae (Stilbum, Briosia, Pycnostysanus, Stysanus, Coremium....)
In KOH the fruiting body turns black.
I've cultured on PDA, MEA and Czapek - growth very slow or almost nil.
Unfortunately, now I am running out of options. I think that I have checked all the 'important' genera of Stilbaceae, and I can't think of another Family for this synnematous ascomycete. (Tuberculariacea maybe?). I still have some specimens to share, and if someone is interested to check just email me your postal address on [marz @ nextgen .net .mt] (remove spaces) and I will send some material - as it can have a potential to be a new species to science from the M altese islands / Central Mediterranean. It is distantly related to Seifertia (=Briosia) azaleae a pathogen of Rhododendron.
Regards