03-02-2026 20:44
Zetti MarioWhen I first saw this white mould on an Agaricus s
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Lothar Krieglsteiner
.. 20.7.25, in subarctic habital. The liverwort i
02-02-2026 21:46
Margot en Geert VullingsOn a barkless poplar branch, we found hairy discs
02-02-2026 14:55
Andgelo Mombert
Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome
02-02-2026 14:33
Andgelo Mombert
Bonjour,Sur le thalle de Peltigera praetextata, ne
31-01-2026 10:22
Michel Hairaud
Bonjour, Cette hypocreale parasite en nombre les
02-02-2026 09:29
Bernard CLESSE
Bonjour à toutes et tous,Pour cette récolte de 2
01-02-2026 19:29
Nicolas Suberbielle
Bonjour, Marie-Rose D'Angelo (Société Mycologiq
31-01-2026 09:17
Marc Detollenaere
Dear Forum,On decorticated wood of Castanea,I foun
I'm trying to identify these rather conspicuous synnematous Hyphomycetes. Does anybody have a hint for a Genus or even a Species?
Habitat: On dead herbaceous stem (probably Adenostyles)
Description: Synnemata with a black Stipe and a brownish head (somewhat slimy when wet, consisting of conidia in chains). Size 1.5-2 x 0.5 mm.
The conidia are produced in long, branched chains (>100 µm long). Single conidial cells usually 8-9 x 2-2.5 µm, hyaline. Few single conidia visible.
Thanks a lot for any comments
Stefan
Merci bien pour cet identification vite. A "Swissfungi" Il y a deux entrées pour Heterosphaeria compositarum et pour H. lojkae. Mais c'es synonyme, n'est ce pas?
Cordialement
Stefan
Current Name:
Mycomicrothelia lojkae (Rehm) You Z. Wang, Aptroot & K.D. Hyde, Fungal Diversity Res. Ser. (Hong Kong) 13: 100 (2004)
Synonymy:
Amphisphaeria lojkae Rehm, Annls mycol. 4(3): 261 (1906)
Heterosphaeria compositarum (Rehm) Höhn., Sber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1 127: 573 (1918)
Heterosphaeria lojkae (Rehm ex G. Winter) J. Schröt., in Cohn, Krypt.-Fl. Schlesien (Breslau) 3.2(1–2): 160 (1893) [1908]
Heterosphaeria patella f. compositarum Rehm, Ber. bayer. bot. Ges. 13: 164 (1912)
Heterosphaeria patella var. lojkae (Rehm) Sacc., Syll. fung. (Abellini) 8: 776 (1889)
Pyrenopeziza lojkae Rehm, Ascomyceten: no. 15a (1870)
Pyrenopeziza lojkae Rehm ex G. Winter, Flora, Jena 30: 509 (1872)
Ma détermination date de 1997 !!! Je ne dispose pas de la publicartion de Y.-Z Wang. Le cas échéant je suis intéressé par une copie.
Amicalement
René





