Accès membres

Mot de passe perdu? S'inscrire

14-04-2024 20:04

Manak Roman

Hi all,I have two very similar finding last weeken

18-05-2024 10:47

Anna Klos

Goodmorning,We found this tiny ascomycete (max. 1m

10-05-2024 17:40

Anna Klos

Good afternoon, Thursday during an inventory we f

17-05-2024 15:17

éric ROMERO éric ROMERO

Bonjour, Un besoin d'aide pour ce Podospora (...?

17-05-2024 16:25

Pavel Jiracek

Erioscyphella lunata, found on a fallen needle of

29-01-2022 21:44

Jan Eckstein

Good evening, apothecia small, yellowish, 150-300

16-05-2024 11:19

Sylvie Le Goff

Bonjour, j'ai récolté sur une branchette de feui

14-05-2024 09:19

Hans-Otto Baral Hans-Otto Baral

Hi, I want to announce for next Sunday 17.00 middl

16-05-2024 11:49

Castillo Joseba Castillo Joseba

De ayer en rama de abetoNo se por donde mirarA ver

14-05-2024 09:50

Yannick Mourgues Yannick Mourgues

Hi. Found on decorticated wod of Populus cf. alba

« < 1 2 3 4 5 > »
Orange Asco
John Plischke, 16-08-2012 09:21
John PlischkeFound growing in Pennsylvana, United States.  Growing on the soil in a mulched path with soil and wood chips under conifers but on the soil.  At first I was thinking it resemble Aleuria aurantia but when when i find that species it grows on clay in disturbed areas and it is much larger.   A friend put it under her microscope and measured the spores at 10 X 8 and very warted.  J- and they did not react with melzer's reagent.  There we only had Nordic Macromycetes and using the key it keyed out to Octospora sp.  but there was no moss.  

So looking at it with another friend under a different microscope we tried additional stains.  I measured the spores at 13.5 X 9.  looking at several of them it appeared that they had spines on the spores that went into a slime layer that surrounded the spore.  It also appeared that inside some of the spores there was a figure 8 or prehaps 2 oil drops or septa.  Not certain.  We also observed that some of the spores had protrusions on each end.  There the book he had was the Fungi of Switzerland and there was a Aleuria that had similar looking spores but it looked different and also differed by having a stalk.  Could not come up with any  better ideas. 

I will post spore photos shortly. 


John
  • message #19469
John Plischke, 16-08-2012 09:40
John Plischke
Re : Orange Asco
6 spore photos
  • message #19473
  • message #19473
  • message #19473
  • message #19473
  • message #19473
  • message #19473
Nicolas VAN VOOREN, 16-08-2012 09:48
Nicolas VAN VOOREN
Re : Orange Asco

I think it's Aleuria aurantia

John Plischke, 16-08-2012 10:21
John Plischke
Re : Orange Asco
I should have mentioned that the cups width was about 1/8 inch or 3mm.  Aleuria aurantia sounds reasonable.  What had us confused is that using the Breitenbach book they show Aleuria splendens with the spore spines being surrounded by a gel layer.  Then looking at the illustration of Aleuria aurantia there the spines are not shown to be surrounded in a gel layer.  That had us confused along with the small fruiting body size.  We were undertain if were were missing something.
René Dougoud, 16-08-2012 15:37
Re : Orange Asco
Cher Collègue,

Il est difficile, à partir de vos photos, de pouvoir apprécier correctement l'ornementation sporale. Si l'ornementation est comme vous l'indiquez, formée d'épines, il ne s'agit alors pas de Aleuria aurantia.


Les Aleuria, contrairement aux Octospora, possèdent des poils hyphoïdes, inférieurs à 200 µm de long, sur l'excipulum. Les apothécies de A. aurantia peuvent être inférieures à 10 mm de diamètre.


La planche 99 de B&K illustre Sowerbyella reynana (Bull. :Fr.) J. Moravec, non une espèce du genre Aleuria.


En annexe une planche montrant les ascospores de A. aurantia.


Amicalement


René

  • message #19478