
11-08-2025 20:31
Jorge HernanzNous avons trouvé cette espèce dans des habitats

06-08-2025 08:56

Hola a todos, Me gustaría saber qué opinan sobre

28-07-2011 23:41

Dear FriendsCourtesy of Zotto, I post to the forum

10-08-2025 11:40

Hello, would you agree here with the identificati

09-08-2025 17:52
Henri KoskinenHello, would you say this is Peziza or Pachyella?

09-08-2025 13:13

Hello,Yesterday I found these on burnt soil. Apoth

31-07-2025 16:32

Dear collegues,today I found on a very fresh fire

12-02-2012 11:31

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

02-08-2025 12:35

Bonjour tous, J'ai trouvé sur pétiole de Fraxin

02-08-2025 17:21

Bonjour,Je recherche la description et la planche
Spores 18-22 x 7.
Looks like Hysterium pulicare, which is very common on oak here.
Norway, Tønsberg.
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
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
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