Accès membres

Mot de passe perdu? S'inscrire

24-04-2024 21:54

éric ROMERO éric ROMERO

Bonjour, J'ai trouvé ce Lasiobolus sur laissées

23-04-2024 15:18

Lothar Krieglsteiner Lothar Krieglsteiner

... but likely a basidiomycete. I hope it is o.k.

23-04-2024 13:17

Edouard Evangelisti Edouard Evangelisti

Bonjour à tous, Je viens de récolter ce que je

23-04-2024 21:49

Ethan Crenson

Hello all, A friend recently found this orange as

22-04-2024 11:52

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I made a loan of a collection of Microstoma

11-01-2022 16:36

Jason Karakehian Jason Karakehian

Hi does anyone have a digital copy of Raitviir A (

22-04-2024 08:54

Rafael Cabral

Bonjour à toutes et tous, Quelqu'un pourrait-il

22-04-2024 20:38

Miguel Ãngel Ribes Miguel Ángel Ribes

Good afternoon.Does anyone know this anamorph?It g

21-04-2024 14:29

B Shelbourne B Shelbourne

• Genus Brunnipila: Distinct macro and habitat,

19-04-2024 14:28

B Shelbourne B Shelbourne

Cudoniella tenuispora: Distinctive macro and habit

« < 1 2 3 4 5 > »
Am I right or totally wrong with Ascobolus geophilus?
Maria Plekkenpol, 14-09-2019 21:53
Holland, 07-09-2019. In riverclay area on soil (old piece of riverbank). Apothecium yellowish/greenish, darkening into brown when older, largest 2,5-3 mm. Asci clavate, 155-190 x 18-20, no Meltzer reaction (J-).
Spores mature deep purple, young hyaline. I think I saw very fine granulation in the young spores, as well as fine warts. Mature spores with fissures/reticulated, 19-21 x 10-13.
Paraphyses slender, longer than the asci, yellow(ish). Septated, sometimes forked, with a slightly swollen top (not all of them).
Following van Brummelen I came to Ascobolus geophilus, but maybe I'm very wrong :) 

What is your opinion? Thanks in advance!
  • message #59265
  • message #59265
  • message #59265
  • message #59265
  • message #59265
  • message #59265
Michel Delpont, 15-09-2019 09:08
Michel Delpont
Re : Am I right or totally wrong with Ascobolus geophilus?
Hello Maria.

Interesting! It is sometimes difficult to separate certain species of this genus. Compares with A.behnitziensis near geophilus. According to Dissing, geophilus spores are later adorned ornamented, unlike behnitziensis. Also try to make other preparations in the Melzer showing the asci; you say negative Melzer whereas normally the reaction must be positive.


Michel.

Viktorie Halasu, 15-09-2019 09:29
Viktorie Halasu
Re : Am I right or totally wrong with Ascobolus geophilus?
Hello Maria,
van Brummelen states that only very young asci are amyloid in A. behnitziensis - i.e., the blueing might be visible only in lower part of the hymenium, see here: https://www.nahuby.sk/obrazok_detail.php?obrazok_id=606132
Cheers,
Viktorie
Maria Plekkenpol, 15-09-2019 10:09
Re : Am I right or totally wrong with Ascobolus geophilus?
Thank you both very much for your quick reply! Sadly I only found two little fruitbodies and the material I tried to save has turned bad. What I can say is that the material I examined did have mature but also very young asci and I looked at your link Victorie, but there was no blue colouring anywhere in the hymenium.
Michel, what I read in van Brummelen about geophilus:

Asci cylindric-clavate, tapering
downwards, rounded above, 160-200 X 17- 20 p. (according to Seaver rgr6, I.e.:
"200-250 X 15- 18 p,"), 8-spored; the wall not, or scarcely, blue in Melzer's reagent.

So I am now a bit confused?
Michel Delpont, 15-09-2019 12:07
Michel Delpont
Re : Am I right or totally wrong with Ascobolus geophilus?
As stated by Viktorie the reaction is sometimes weak and only on young asci, especially on the walls. Maybe your Melzer is not focused enough?

I hope you will find new apothecies to be able to specify the determination.

Michel.


Maria Plekkenpol, 15-09-2019 17:56
Re : Am I right or totally wrong with Ascobolus geophilus?
Thank you both!!