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20-09-2020 22:01

Stephen Mifsud Stephen Mifsud

I have found Botryosporium longibrachiatum on dec

19-10-2016 20:32

Thorben Hülsewig

Hi there,last Sunday i found on rotten plant this

20-09-2020 15:39

Juuso Äikäs

These were also growing on deer dung. Spores 10.

20-09-2020 15:13

Juuso Äikäs

Some quite small ascos were growing on deer dung w

20-09-2020 18:11

Castillo Joseba Castillo Joseba

De esta mañana  sobre madera posiblemente de Fag

20-09-2020 15:02

Chris Yeates Chris Yeates

Bonjour tous A few days ago I collected a piece o

18-09-2020 22:38

Castillo Joseba Castillo Joseba

De esta mañana  en corteza de fagusHe visto unos

19-09-2020 11:04

Angel Pintos Angel Pintos

Hello,anybody has?Pseudoguignardia scirpi Gutner,

18-09-2020 22:49

Marek Capoun Marek Capoun

Hello everybody,I need help with the determination

01-03-2017 17:18

Enrique Rubio Enrique Rubio

Hi to everybodyCould you help me with a pdf copy o

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Stictis on Bamboo sps.
Hardware Tony, 01-06-2020 16:41
Hardware TonyAt first I felt this was edging towards S. stellata, as I understand that this is the more common in the UK on herbaceous plants stems etc. However, I finally worked out that Bamboo is a grass and with it comes another possibility. The few records I can find and in Europe is that S. arundinacea is found on grasses and with Bamboo as one of the substrates. The spores are approx 145-150 x 2, the one measured here at 137µm is short of the final pinpoint end as you will see here. So longer. The apothecial margin to me isn't star shaped and mopre enclosed and rounded. The base of the asci did not chnage colour in Iodine, which cancels out S. radiata. Paraphyses are very slender with slight swelling at ends. Wondered if anyone esle had come across this species on grasses or Bamboo.

With thanks  Tony Hardware
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Paul Cannon, 01-06-2020 18:18
Re : Stictis on Bamboo sps.
Hello Tony

I have material of Stictis stellata on bamboo (from Hampshire), and despite its name the ascomata are usually not noticeably stellate. You probably have either this species or S. arundinacea; the easiest way to tell between the two is to section the fruit-bodies; S. arundinacea has a wall that is at least partially dark, while in S. stellata it is ± hyaline. They both have strongly white-pruinose rims, so don't confuse this with wall tissue.

Best wishes

Paul
Hardware Tony, 01-06-2020 21:39
Hardware Tony
Re : Stictis on Bamboo sps.
Hi Paul,Thks for your helpful comments. I have tried to section the largest sample I have which was under 0.5mm, and this is the result. If I have managed to split corrrectly then it is appearing to look like S. stellata as no darken areas appearing?  

Thks  Tony
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Paul Cannon, 04-06-2020 10:43
Re : Stictis on Bamboo sps.
I can't really tell from these images. Ideally you need to split the bamboo along the grain and then whittle away using a double-sided razor blade (with obvious attention to health and safety) to get thin sections (as thin as possible). You can either mount them in water and observe using your compound microscope, or you might just see a dark line delimiting the fruit-body (if it is there) with the high power of a dissecting microscope.

Enjoy!

Paul
Hardware Tony, 04-06-2020 12:23
Hardware Tony
Re : Stictis on Bamboo sps.
Thanks Paul. I'll try, but if you don't hear from me again then the razor slipped.

There must be easier fish to fry.
Thks again Tony
Hardware Tony, 04-06-2020 13:24
Hardware Tony
Re : Stictis on Bamboo sps.
hi Paul,

Tried my bwest here but doubt it was good enough. Shaved down very gradually and these are the three images I manged to obtain on compund microscope at 40x and 100x last one. Just looks plain whitish to me, but expect not good enough.

Placed the cut along grain slice between two pieces of bluetack! Keep it intack while I skimmed it. I might have learnt something there.
Regards  Tony
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Hardware Tony, 04-06-2020 13:25
Hardware Tony
Re : Stictis on Bamboo sps.
Two more images:
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Paul Cannon, 05-06-2020 18:13
Re : Stictis on Bamboo sps.
Still not completely sure but S. stellata seems to be a good hypothesis for the ID.

Pual