
19-09-2025 23:55
Jorge HernanzEstoy buscando y no encuentro el siguiente artÃcu

17-09-2025 19:43
Philippe PELLICIERSur branche morte de Mélèze. Les ascospores sphÃ

18-09-2025 16:14

Hello,I am looking for a copy of following paper:H

17-09-2025 10:50
Heather MerryleesHi there!I am hoping for any advice on the identif

11-09-2025 16:57
Our revision of Marthamycetales (Leotiomycetes) is

16-09-2025 12:53
Philippe PELLICIERPézizes de 1-4 mm, brun grisâtres, sur les capsu

J'ai trouvé hier en pelouse calcicole xérique très rase (xérobrometum) ce petit asco qui me fait penser à un Ciboria.
a) diamètre apothécie : 2,5 mm
b) longueur pied : 2 mm
c) spores elliptiques-subfusiformes, à 2 guttules polaires : 18,5-21x8,5-9 µ
d) asques IKI+
e) excipulum à textura globosa, à cellules brunes, les terminales hyalines et cylindro-clavées
f) paraphyses hyalines, à peine élargies à l'apex.
Bernard

Hi Bernard,
I think this is Sclerotinia trifoliorum.
You have overlooked the sclerotia.
Look at your ascus-foto - you see 4 small and 4 larger spores.
The habitat is quite typical, the species is quite common in meadows, but mostly only solitary or few ascomata.
Best regards, Lothar

Do you know the potential hosts of this Sclerotinia because in this environment there is to my knowledge no Trifolium but many other Fabaceae (Hippocrepis, Anthyllis, Medicago…) ?
Best regards,
Bernard

Hi Bernard,
I fear I cannot help you with this - perhaps the species is not very specialized.
Best regards from Lothar

Bernard

check this database: https://nt.ars-grin.gov/fungaldatabases/fungushost/fungushost.cfm
there are a lot of hosts for S. trifoliorum!
Best regards
Martin

I see that Medicago, Lotus corniculatus and Anthyllis could be hosts of Sclerotinia trifoliorum, which may be suitable.
Best regards,
Bernard