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06-08-2015 07:45

Stephen Martin Mifsud Stephen Martin Mifsud

Hi, I had this image for identification since few

05-08-2015 22:12

Joaquin Martin

HiHyalorbilia found in branch of Quercus rubra.Spo

05-08-2015 18:10

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I would like to know your oppinion on this S

04-08-2015 20:38

Per Vetlesen

Substrate: Corylus avellanaAsci cylindric, 8-spore

05-08-2015 10:57

Blasco Rafael Blasco Rafael

Hola, tengo esta muestra recogida a 1400m sobre A.

04-08-2015 15:55

Steve Clements

Bonjour,On a trouvé un Cordyceps la semaine derni

04-08-2015 09:44

Castillo Joseba Castillo Joseba

Encontrado en el Pirineo, en madera de abeto o de

04-08-2015 09:52

Castillo Joseba Castillo Joseba

en rama de  haya (Fagus)No se si he conseguido ve

03-08-2015 23:20

Alain GARDIENNET Alain GARDIENNET

Hi all, Help, I need : Hafellner, J.; Herzog, G.

01-08-2015 21:35

Thorben Hülsewig

Hi there Today i found a fungus on a robber fly a

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Rutstroemia (?) on Camellia leaves
Nick Aplin, 28-07-2015 23:46

Salut à tous,


 


Yesterday I found many apothecia of this interesting species on fallen leaves of Camellia japonica They measure up to 1.8 mm and had short stalks (up to 1mm). They were present on almost every leaf I inspected.


Asci IKI BB, croziers not observed (despite intense searching...)


Ascospores 9.8 - 11.9 x 5 - 6 µm, usually with two very large guttules and several smaller ones, with delicate sheaths which quickly disappear in water.


Paraphyses with a long, continuous vacuole (as in Mollisia)


Flank cells often with brown encrustation, and with large refractive vacuoles which quickly collapse and turn brown.


My specimen seems quite close to R.'kalevi' , though the ascospore dimensions are just a little different, as is the guttulation (and substrate). I'll come back later with some photos of  ascus bases.


Am I thinking along the right lines? Has anyone collected anything similar on Camellia?


Amitiés,


Nick

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Chris Yeates, 29-07-2015 03:08
Chris Yeates
Re : Rutstroemia (?) on Camellia leaves
Hi Nick
this is just an idle thought - I'm sure others will prove far more knowledgeable - but those spores remind me of those of Trochila spp.
best wishes
Chris
Lothar Krieglsteiner, 29-07-2015 06:33
Lothar Krieglsteiner
Re : Rutstroemia (?) on Camellia leaves

I have no idea what species it could be - Camellia is a substrate not growing in Central Europe. But I think it is a Sclerotiniaceae because of the type of apical apparatus. And - yes - why not Rutstroemia? The spores are fully guttulate and elongate, and the macroscopical appearance could fit.


Regards from Lothar

Hans-Otto Baral, 29-07-2015 08:15
Hans-Otto Baral
Re : Rutstroemia (?) on Camellia leaves
Hi Nick

what an interesting species! I see that I do not have any asco on Camellia leaves in my database, and I have no idea of the species. Rutstroemia is a good option. What shape do the excipular cells have? A photo would be useful, also if there is any gel layer.

Is it a park where you collected the fungus?

Zotto
Masanori Kutsuna, 29-07-2015 08:58
Re : Rutstroemia (?) on Camellia leaves
Hello Nick

I collected similar disco on Camellia japonica in Japan, relatively common in summer.
Ascospores of Japan materials, 10.2-12.8 x 4.5-5.6 ?m, seem pale brown after discharge.


Kutsuna


 

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Nick Aplin, 30-07-2015 01:36
Re : Rutstroemia (?) on Camellia leaves

Hi all,


Amazing Kutsuna! - I had hoped that this fungus was known in Japan!


I saw a few old light brown spores and your macroscopy and spore size fit well with mine. I don't suppose you found a name?


Zotto - Yes, a park/public garden. There is no gel -  The third photo shows the area directly below the hymenium - Sorry but the anatomical teminology escapes me :)


Hopefully you agree that the ascus bases have no croziers (I found the photography tricky here!). Sometimes the ascogenus cells have little 'bulges' but I never saw these reach up to make a 'full' crozier.


Best wishes and apologies for the many photos,


Nick


 

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Hans-Otto Baral, 30-07-2015 07:11
Hans-Otto Baral
Re : Rutstroemia (?) on Camellia leaves
Interesting indeed! Absence of croziers is rather rare in sclerotiniaceous fungi, and the excipulum of t. angularis exceptional within Rutstoemia (though occurring in R. bolaris).

So we should know quite enough about this species - maybe Japanese workers (Tsuyoshi Hosoya, Yanjie Zhao) could help? I will send them a link.

Zotto