20-04-2026 22:00
Malcolm Greaves
These pale yellow, hairy ascos were growing on cul
19-04-2026 21:23
Steve ClementsBonjour, I found this anamorphic fungus on old pl
19-04-2026 20:46
Steve Clements1 mm diameter approx spherical conidiophores on pl
12-04-2026 17:56
Hardware Tony
Found on dead stems in February earlier this year
17-04-2026 19:16
Enrique Rubio
Hi to everybodyI would appreciate any assistance r
14-04-2026 05:32
Ethan CrensonHi all, A few weeks back a friend pointed out som
17-04-2026 15:14
Bruno Coué
Bonjour.Récoltes du 16/04/2026, sur feuilles mort
12-04-2026 15:52
Gernot FriebesHi,I'm looking for help with this anamorph collect
14-04-2026 21:52
Gernot FriebesHi,found on dead leaves of Carex elata. Conidia: 4
16-04-2026 22:09
Buckwheat PeteHello, I'd like to ask about this older specimen:
Discostroma corticola
William de Jong,
23-12-2021 19:16
A few days ago I found this ascomycete on a dead, but still attached, Rubus branch (The Netherlands). Asci J+, in Melzers a blue apical ring. 8 spores per ascus. Varying from 1 to 3 septate. 3-septate hyaline spores: 16,2-19,2(-19,4)x(5,5-)6,3-7,3(-7,4) µm; average 17,8x6,8; Q=2,64 (n=11). Conidia without appendage, 3-septate, 3 cells brown, 1 end cel hyaline: (13,3-)13,7-15,3(-15,4)x(5,1-)5,4-6,5(-6,9) µm; average 14,5x6,0; Q=2,43 (n=10).
The perfect as well as the imperfect spores perfectly fit the description of Discostroma corticola (Seimatosporium/Sporocadus lichenicola) in Brockman (1976), Sydowia 28 (https://www.zobodat.at/pdf/Sydowia_28_0275-0338.pdf).
When using the key in Paulus B.C., Gadek P.A. & K.D. Hyde (2006), Sydowia 58, I end up with D. rubicola (Metasphaeria rubicola). (https://www.zobodat.at/pdf/Sydowia_58_0076-0090.pdf)
However, the sizes of the conidia don't match at all (22-30x9-10(-12) according to them). Also, there is not much to find about this D. rubicola. But most of all, D. corticola is not mentioned in this study..
Liu et al., Studies in Mycology (2019) 92: 287–415 mentions D. corticola as Sporocadus lichenicola, the ascospore sizes match my finding, however, the conidia don't match (18-25x5.5-8).
Any thoughts on this?
Kind regards,
William de Jong
