Accès membres

Mot de passe perdu? S'inscrire

31-03-2026 21:18

Lambertella tetrica paper
Miguel Ãngel Ribes Miguel Ángel Ribes

Good evening. oes anyone have the original descrip

31-03-2026 20:57

"Nectria" - for a lack of better knowledge...
Stefan Blaser

Hello everybody, I hope somebody can help me with

26-03-2026 15:31

Hymenoscyphus ombrophiliformis?
Ãke Widgren Åke Widgren

Hello,I found this one in October last year, on r

31-03-2026 16:20

Helotiales from Tanzania
Mlcoch Patrik Mlcoch Patrik

Hello, Please about help with determination. On

31-03-2026 08:19

Daldinia childiae parasité
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

30-03-2026 12:18

Demande d'aide
Sylvie Le Goff

BonjourRécolté sur la base de Pteridium aquilinu

30-03-2026 12:03

Dumontinia on Ficaria?
William Slosse William Slosse

Hello all,On 27/03/26, in Kraaiveld in Wingene (Be

25-03-2026 10:35

Encoelia impudicella?
Hulda Caroline Holte

Hello,I collected this species growing on a dead b

28-03-2026 17:41

Mollisia sur Molinia
Louis DENY

Bonjour forum,Mollisia trouvée sur tige de Molini

30-03-2026 09:53

Lachnum mollissinum ?
Yanick BOULANGER

BonjourVoici des petites fructifications poilues s

« < 1 2 3 4 5 > »
Hysterium hyalinum
Ethan Crenson, 28-09-2017 05:06
Collected recently in Vermont in the Green Mountains.  I believe this is Hysterium hyalinum.  It is on a decorticated hardwood branch (along with Berkleasmium conglobatum and a Patellarioid asco which I posted earlier.)  Long naviculate hysterothecia with an apical slit.  They are mostly flattened at the apex.  The longest of them are 2-2.5mm long and slightly less than .5mm wide.

Spores are hyaline at first and eventually brown. Mostly 3 septate, constricted at the sepatations.  20-25 x 7.5-9µm. 

Asci are 92-110 x 15-17µm. 

This seemed to key out to H. hyalinum using Boehm's key and matched fairly well with information from Marion Lohman, "A Cultural and Taxonomic Study of Hysterium hyalinum". 
  • message #50546
  • message #50546
  • message #50546
  • message #50546
  • message #50546
  • message #50546
Hans-Otto Baral, 28-09-2017 07:57
Hans-Otto Baral
Re : Hysterium hyalinum
The name hyalinum could refer to the spores beeing obviously shot when still hyaline, judging from the living, seemingly mature asci on your photos. In your Haematomyxa this is unclear as you did not see living asci, while in my collection the spores were faintly coloured when still inside the living asci.