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Hello, I found this very small (ca 0,5mm) yellow
Ascomycete on an old wood stair
Lepista Zacarias,
14-08-2015 00:00
I would like to classify the ascomycete growing in an old portable wood stair. Here are some of its features:
- Apothecia rounded, black, less than 1 mm in diameter;
- Asci 8-spored, up to 100 x 15 um;
- Spores hialine, coiled in ascus, multi-septate (up to 10 septa), with dimensions
(28.5) 30.6 - 38.3 (39.4) x (6.8) 6.9 - 8.5 (9.3) um
Q = (3.6) 3.9 - 5 (5.7) ; N = 26, Me = 34.4 x 7.8 um ; Qe = 4.4;
- Paraphysis anastomosed at the apices with a bluish-black colour;
- All parts I-.
Any help will be appreciated.
Thanks in advance,
zaca
DirkW,
14-08-2015 00:09
Re : Ascomycete on an old wood stair
hi lepista,
thats patellaria atrata in a very dry state. very common on decorticated wood and "human influenced" substrats like stairs, fences etc ... i even found some on an rope ;-)
best
dirk
thats patellaria atrata in a very dry state. very common on decorticated wood and "human influenced" substrats like stairs, fences etc ... i even found some on an rope ;-)
best
dirk
Lepista Zacarias,
14-08-2015 00:51
Re : Ascomycete on an old wood stair
Hi Dirk,
In fact, it seems well established in human environments.
Thanks for the help,
Yours,
zaca
In fact, it seems well established in human environments.
Thanks for the help,
Yours,
zaca
Hans-Otto Baral,
14-08-2015 08:17
Re : Ascomycete on an old wood stair
Patellara atrata or a very closely related species. In the living state I would see more clear, although the blueish colour tells for my P. "crassispora".
In which region did you collect this?
Zotto
In which region did you collect this?
Zotto
Lepista Zacarias,
14-08-2015 13:56
Re : Ascomycete on an old wood stair
Hi Zotto,
Thanks for the comment.
This material is from Lourinhã, Portugal (west -center coast). It was analyzed just after being collected. What do you see more clear?
Regards,
zaca
Thanks for the comment.
This material is from Lourinhã, Portugal (west -center coast). It was analyzed just after being collected. What do you see more clear?
Regards,
zaca
Hans-Otto Baral,
14-08-2015 16:33
Re : Ascomycete on an old wood stair
The oil drops in the spores tend to be multiguttulate in crassispora but are always a few large in atrata.
Maybe the drought was so long that the fungus did not survive? Or you should test younger apothecia. If you place the piece under water for a minute and then let it dry for a while, the apos will be imbibed and you will perhaps find also living ones.
Maybe the drought was so long that the fungus did not survive? Or you should test younger apothecia. If you place the piece under water for a minute and then let it dry for a while, the apos will be imbibed and you will perhaps find also living ones.
Lepista Zacarias,
14-08-2015 22:12
Re : Ascomycete on an old wood stair
Thanks, Zotto.
I will try it next week (I'm travelling now) and post new results, if anything different.
Best regards,
zaca
I will try it next week (I'm travelling now) and post new results, if anything different.
Best regards,
zaca
Hans-Otto Baral,
14-08-2015 22:33
Re : Ascomycete on an old wood stair
Hi Dirk
Great! - that case I noticed also some years ago :-)
Zotto
Great! - that case I noticed also some years ago :-)
Zotto
DirkW,
14-08-2015 22:54
Re : Ascomycete on an old wood stair
hi zotto,
one should examine more ropes :-)
i remember a rope you documentated with a bunch of orbilias - but unfortunately i lost the picture ...
best
dirk
one should examine more ropes :-)
i remember a rope you documentated with a bunch of orbilias - but unfortunately i lost the picture ...
best
dirk
Hans-Otto Baral,
15-08-2015 18:24
Re : Ascomycete on an old wood stair
yes it was this rope, with various ascos.... Orbilia aristata the most frequent.
Lepista Zacarias,
20-08-2015 00:57
Re : Ascomycete on an old wood stair
I followed Zotto recommendation to try to observe some living spores, but it seems that it doesn't worked. I upload a new photo with spores inside the asci, all seeming to be dead.
Hans-Otto Baral,
20-08-2015 09:14
Re : Ascomycete on an old wood stair
you are right :-(
Lepista Zacarias,
20-08-2015 22:37
Re : Ascomycete on an old wood stair
Thanks, Zotto, for confirmation.
By the end of the week I will return to the place and will collect another sample.
Best regards,
zaca
By the end of the week I will return to the place and will collect another sample.
Best regards,
zaca