12-03-2026 19:44
Enrique Rubio
Hi to everybody.Can you give me any suggestions ab
17-03-2026 10:09
François Freléchoux
Bonjour, Voici la description rapide d'un petit d
17-03-2026 10:40
Martine Vandeplanque
Bonjour à tous.Chaque année en mars ou avril, il
05-03-2026 10:07
Hulda Caroline HolteHello, I found and collected this species growing
12-03-2026 15:45
Åge OterhalsDear forum,I found this small discomycete on a ver
11-03-2026 17:36
Michel Hairaud
Bonjour, Je cherche des indices pour cette réc
14-03-2026 13:51
Thierry Blondelle
Hi everybody Under Quercus ilex, i hesitate to na
08-03-2026 14:05
Thierry Blondelle
Bonjour à tous,Sur 3 récoltes supposées de H. l
Found ascomycete growing on leaves of Acer.
I think it is Microthyrium sp.
Any idea?
Thank you, best regards
Susana
there is a key to (British species at least) of Microthyrium at: http://www.fieldmycology.net/FRDBI/..%5Cgbchklst%5Ckey.asp?KeyID=14??
it is hard to see from the photograph - do the spores have appendages? if so are they apical or lateral; the only Microthyrium I have recorded on an Acer (A. pseudoplatanus) was M. microscopicum
best wishes
Chris
The spores had no appendages or cilia.
The substrate was Acer campestre
Thank you for the key.
I been able to find descriptions and a key in Ellis, JP 1976. British Microthyrium fungi species and like. 67 (3) :381-394; http://www.librifungorum.org/Image.asp?Nav=yes&FirstPage=243479&LastPage=244008&NextPage=243842
My collects all data agrees with Microthyrium fagi, JP Ellis M.fagi 1976, including the presence of dark collar.
I think between the two keys there is a discrepancy between the species M. fagi and M. inconspicuum, at least in the presence or absence of darker collar.
regards
Susana