21-03-2026 15:13
Lepista ZacariasHello everyone, Does any one know of any literatu
20-10-2017 09:23
Garcia SusanaEste otro crecía en el mismo trocito de madera qu
20-03-2026 16:16
Edvin Johannesen
These 0.5 mm diam. acervuli were breaking through
19-03-2026 19:34
Filip Fuljer
Hello everyone,a few days ago I collected this str
19-03-2026 18:25
William Slosse
Good evening everyone, On 18/03/26 I found a few
17-03-2026 10:09
François Freléchoux
Bonjour, Voici la description rapide d'un petit d
19-03-2026 17:50
Enrique Rubio
Hi to everybodyThese thiny, blackish pseudothecia
Very 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.
Peter.
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