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18-11-2017 21:19

Edmond POINTE Edmond POINTE

Bonjour,Je suuis perplexe quand a mettre un nom su

18-11-2017 14:26

Bernard Declercq Bernard Declercq

Dear forum members,Who can supply me a pdf of foll

18-11-2017 16:45

Gilbert MOYNE

Voici un asco qui me pose problème et je n'arrive

17-11-2017 21:10

Garcia Susana

Sobre madera en zona muy húmeda.No consigo identi

18-11-2017 07:44

Andrés Valverde Valera Andrés Valverde Valera

Bonjour, Je ne sais pas si peut être cette espèc

16-11-2017 15:41

Zoltan Lukacs Zoltan Lukacs

Hello,I have absolutely no idea on this one. (Subs

17-11-2017 06:43

Ethan Crenson

From the Bronx, NYC on Platanus × acerifolia. On

10-11-2017 21:23

Garcia Susana

HolaPeritecio inmerso en madera de haya.No llego a

15-11-2017 23:50

Danny Newman Danny Newman

note cruciate/sulcate ostiolar necks. paraphyses

16-11-2017 17:01

Pavol Palo

Hi, I've found this ascomycete on a dead lying s

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Ascuswall amyloid genus uncertain
Lieve Deceuninck, 03-09-2017 17:26
Lieve Deceuninck

Dear Forummembers


I've a problem with an asco on riched soil (flowerpot), sclerotia not observed.



Apothecium: 2- 8 mm diam.; 1- 6 mm high, first turbinate then turbinate to discoid narrowed  into a tapering stipe.; disc with a depression; pink brown; margin even and a little outwards reflexed; outside flocculose, dark pink brown.


Section:
-medular excipulum: elongated cells,  tended to textura epidermoidea
-ectal excipulum: textura subglobosa to textura angularis : outside with yellowbrown elongated excipulumcells; broadened at the top
Margin: transition between paraphyses and elongated excipulumcells:-7 septate ; cilindric,  subclavate, subcapitate; yellowbrown


Spores in water : 16-20(22)x(9)9.5 10 µm : smooth (also in cottonblue); eggutulate but small polair zone with diffuse droplets
Asci: 250-300x14-16 µm operculate; ascuswall amyloid in Melzers reagens;(ascustop didn't shows the typical Peziza darkblue top).
Paraphyses: agglutinated,cilindric;  6µm ; top broadened to-8 µm; light brown vacuolair pigment; -5 septate


Discussion:
Peziza fimeti: typical dark blue ascustop is missing , also without oildrops but different in medular excipulum? Does there exist a Peziza fimeti complex as a friend of my give me that suggestion?
Pseudombrophila-like but this genus is without amyloid ascuswall and asci < 200 µm
Pachyella: different hair outgrowths, spores with two oildrops


Thanks for any reaction.

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Hans-Otto Baral, 03-09-2017 17:44
Hans-Otto Baral
Re : Ascuswall amyloid genus uncertain
Hi Lieve
I am surprised about the obviously multinucleate spores containing at least 4 nuclei. I remember this as a rare feature in Pezizales, occurring in Sarcoscyphinae and perhaps a few other groups. In Syllabus I wrote for both Ascobolaceae and Pezizaceae the the spores were uninucleate.
Maybe there occur exceptions....
Zotto
Nicolas VAN VOOREN, 03-09-2017 18:22
Nicolas VAN VOOREN
Re : Ascuswall amyloid genus uncertain
This fungus reminds me Lepidotia hispida (sn. Peziza quelepidotia) because of the spore shape and the spore content (and also the amyloid reaction of asci) and the presence of a stipe, but there are some differences:
- color of apothecia;
- size of ascospores;
- pattern of amyloid reaction;
- asci with croziers.

No idea of what it can be, maybe an exotic species...
Lieve Deceuninck, 04-09-2017 09:52
Lieve Deceuninck
Re : Ascuswall amyloid genus uncertain
Hi Zotto and Nicolas
Thanks for your interesting addtions and info.

Lieve