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11-08-2025 20:31

Jorge Hernanz

Nous avons trouvé cette espèce dans des habitats

06-08-2025 08:56

Antonio Ezquerro Antoñana Antonio Ezquerro Antoñana

Hola a todos, Me gustaría saber qué opinan sobre

28-07-2011 23:41

Alex Akulov Alex Akulov

Dear FriendsCourtesy of Zotto, I post to the forum

10-08-2025 11:40

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, would you agree here with the identificati

09-08-2025 17:52

Henri Koskinen

Hello, would you say this is Peziza or Pachyella?

09-08-2025 13:13

Maria Plekkenpol Maria Plekkenpol

Hello,Yesterday I found these on burnt soil. Apoth

31-07-2025 16:32

Andreas Gminder Andreas Gminder

Dear collegues,today I found on a very fresh fire

12-02-2012 11:31

Hans-Otto Baral Hans-Otto Baral

Hi allI am quite sure that nobody has a pdf of thi

02-08-2025 12:35

éric ROMERO éric ROMERO

Bonjour tous, J'ai trouvé sur pétiole de Fraxin

02-08-2025 17:21

Andgelo Mombert Andgelo Mombert

Bonjour,Je recherche la description et la planche

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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