what could this be? - Forum ASCOFrance

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what could this be?

hannie wijers, 06-06-2013 17:26

on herbaceous flowers I found this sordaria-like black frb. It was on top of the material. I didn't grow from the inside. I think there are long spores in the asci. I could count six of them, but perhaps there were more of them in the asci. The measurre of the spores 140-155x2,5 µm, as long as the measure of the asci. I think the outside of the frb, is a little hairy.
I couldn't find any reaction with Melzer.
I don't have any idea where to look for. Maybe some of you cab give me a hand.

Best wishes
Hannie

hannie wijers, 06-06-2013 17:30

Re : what could this be?

the other pictures

Andrew N. Miller, 06-06-2013 17:38

Re : what could this be?

Leptospora sp.

Andy

hannie wijers, 06-06-2013 19:16

Re : what could this be?

Thank you Andy. Can you tell me why it is spec. Is this because the substate which it's growing on? I took a look at the web but Cann't find anything about spec.

Hannie

Andrew N. Miller, 06-06-2013 21:18

Re : what could this be?

Honestly, I call everything growing on herbaceous stems with long, filiform ascospores Leptosphaeria... ;o)

Also, my Ph.D. advisor did her doctoral research on this genus (Systematics of Leptosphaeria species found on the Rosaceae by S.M. Huhndorf).

Andy

Alain GARDIENNET, 06-06-2013 21:41

Re : what could this be?

Hi Hannie, hi Andy,
I have a lot of records of Leptospora rubella on many different herbaceous hosts.
For example, you find old Lamium galeobdolon and there is probably L. rubella.
This one is recognizable by its red ostiol. You cut vertically in the median plan and you can see the red colour easily.
Perhaps you will see this colour in yours ?
Alain

hannie wijers, 07-06-2013 09:58

Re : what could this be?

Hello Andy and Alalin. Thanks for the explanation, now I understand it a little more. I'm not studying all these too long, but it's very interesting. Thanks again. I'm off for today but tomorrow I'll take a look. I stille have some material.

Best wishes

Hannie

hannie wijers, 08-06-2013 12:22

Re : what could this be?

Hello Alain,

I'm not quite sure if this is what you meant. Ik cut a frb and saw a little red. Under the bino I could also se a red colour.

Here in Holland theré's also one named Ophioceras leptosporum-Schermbloeminktpuntje

Can you tell me what's the difference between this one and Leptospora rubella?

Thank you Hannie