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05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

01-06-2025 09:37

Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

06-07-2025 19:36

Castillo Joseba Castillo Joseba

me mandan el material de Galicia (España) recolec

07-07-2025 19:22

David Chapados David Chapados

Hi,Does anyone know what could this anamorph be?ht

02-07-2025 18:45

Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

04-07-2025 20:12

Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

03-07-2025 18:40

Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

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Pyreno on Aesculus hippocastaneus.
Per Marstad, 23-12-2017 21:00
Per MarstadVery small, ca. 1 mm in diam.
Spores 18-22 x 7.
Looks like Hysterium pulicare, which is very common on oak here.
Norway, Tønsberg.
Per.
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Peter Püwert, 23-12-2017 23:10
Peter Püwert
Re : Pyreno on Aesculus hippocastaneus.
Hi, probably Hysterium angustatum.
Peter.
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Björn Wergen, 23-12-2017 23:40
Björn Wergen
Re : Pyreno on Aesculus hippocastaneus.
Hi Per,

for determination of these "Hysterothecia", spores are the most important feature. There are two common species which mostly grow on bark of various trees: Hysterium angustatum and Hysterium pulicare. The latter one has beautiful bicolorous spores.

Regards,
Björn
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Per Marstad, 27-12-2017 16:53
Per Marstad
Re : Pyreno on Aesculus hippocastaneus.
Is Hysterium angustatum and H. acuminatum syn.?
Per
Stoykov Dimitar, 30-12-2017 12:01
Stoykov Dimitar
Re : Pyreno on Aesculus hippocastaneus.
Hi Per,

I don't know this taxon, Index Fungorum gave the name as legitimate name suggested in Fries as H. acuminatum. You have to check the descriptions provided in the literature.

Dimitar
Alain GARDIENNET, 30-12-2017 14:39
Alain GARDIENNET
Re : Pyreno on Aesculus hippocastaneus.

Hi,


Yes, obviously H. angustatum ; of course ascospores are a good feature but we must be careful because other genus not so far away provide  fungi with such ascospores. For example : Hysteropatella prostii or Mytilinidion tortile.


Synonymies,  by E. Boehm :


Hysterium angustatum Alb. et Schw.
Alb. et Schw. 1805. Consp. Fung. Lusat.: 55.


Syn. :


Hysterium acuminatum Fries, 1823
Hysterium acuminatum var. alpinum Rehm (after Saccardo, 1883, & Rehm, 1896)
Gloniella ambigua Karst., 1891
Hysterium angustatum var. cerotoniae Toll, 1905
Hysterium eucalypti Phill. et Hark., 1884b
Hysterium karstenii Lohman, 1939
Hysterium lentisci Rolland, 1901
Hysterium pulicare var. angustatum Kunze (after Fries, 1823)
Hysterium pulicare var. totarae Sacc., 1908


Best wishes for 2018,


Alain


 

Per Marstad, 30-12-2017 18:06
Per Marstad
Re : Pyreno on Aesculus hippocastaneus.
Thank you to you all.
Per