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Thomas Flammerdark brown apothecia, splitIKI-Spores biguttulate

13-09-2025 14:10
Wim de GrootWe found this hymenoscyphus on rubus fruticulosis.

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

10-09-2025 23:53

Found on Robinia pseudoacasia together with Diapor

10-09-2025 17:18

Hola, encontre este estiercol de vaca estos apotec

02-09-2025 11:34
Thomas Læssøehttps://svampe.databasen.org/observations/10527903
Disco on Carex flacca
Chris Yeates,
28-08-2015 21:22

this small discomycete was collected on damp dead leaves of Carex flacca. Although kept damp and fresh, when being prepared for photography the apothecia dried very quickly, drying darker.
The discs were pale coffee-coloured, with an excipulum which consisted of brown textura globosa at the base, the cells narrowing and ending in a fimbriate hyaline fringe.
Asci were (I think without croziers); IKI+ bb.
Paraphyses were filiform, not broadening at the apex, and without obvious contents.
Ascospores were cigar-shaped, some slightly curved and with guttules in each half with a clear central portion; 14.4-18.
I had wondered about Psilachnum asemum, but that has lanceolate paraphyses and IKI- asci . . . .
and suggestions would be welcome
Cordialement
Chris
Hans-Otto Baral,
28-08-2015 21:45

Re : Disco on Carex flacca
Hi Chris
I suppose asci are with croziers. Psilachnum asemum I still think is another name for Cporonellaria caricinella, a species with guttulate warted paraphyses, hemiamyloid apical rings, and broader spores than yours. Did you measure spore width?
I have something similar which I compared with Pseudonaevia (9383, on Carex juncella in Lapland):
https://www.cubbyusercontent.com/pl/CC%2bAscomycota/_1354d48ffaad4b59bd3ffdbb35915d1f#CC%20Ascomycota/7a%20Helotiales/m%20Hysteropezizella-complex/Pseudonaevia
Spores are broader.
Zotto
I suppose asci are with croziers. Psilachnum asemum I still think is another name for Cporonellaria caricinella, a species with guttulate warted paraphyses, hemiamyloid apical rings, and broader spores than yours. Did you measure spore width?
I have something similar which I compared with Pseudonaevia (9383, on Carex juncella in Lapland):
https://www.cubbyusercontent.com/pl/CC%2bAscomycota/_1354d48ffaad4b59bd3ffdbb35915d1f#CC%20Ascomycota/7a%20Helotiales/m%20Hysteropezizella-complex/Pseudonaevia
Spores are broader.
Zotto
Chris Yeates,
28-08-2015 22:21

Re : Disco on Carex flacca
Sorry Zotto spores were 14.4-18 x 2.8-3.1µm . . .
thanks for the quick response
LG
Chris
thanks for the quick response
LG
Chris