21-04-2026 22:14
Margot en Geert VullingsThis cup fungus was found on April 10, 2026, on lo
21-04-2026 13:36
Gernot FriebesHi,I am out of ideas for this one. I collected Sal
21-04-2026 13:19
Gernot FriebesHi,this Lophodermium on Typha has ascospores measu
21-04-2026 13:05
Gernot FriebesHi,this hyphomycete feels familiar but I was not a
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
I found this ascomycete growing on stems of Equisetum arvense.
Perithecia size diameter is 200-230um. They are superficial, on a subiculum of hyphae; very easily removable. Color orange. When drying takes on a darker color and takes shape apotecioide.
The reaction is negative both KOH and the lactic acid.
Spores I see them smooth (I made stains with CB and RC and I have not seen any trace of ornamentation).
With the documentation that I have, I understand that this is Hydropisphaeria, and the key I have come to H.arenula, but the spore size would be too large.
That think?
regards
Susana
Spore size fits well. In H.B. 8622b, e.g., I measured 13.5-)16.5-#18-21#(-22.5) x 4.3-5.2(-5.8) µm
I also revised the type of Nectria equiseti-hiemalis showing spores in KOH (12-15-)16-22 x (3.2-)3.5-3.7(-4.2) µm. We confirmed its synonymy with H. arenula.
Do you have my paper? It is in Österr. Z. Pilzk. 17 (2008). I can send you a pdf.
Zotto
the paper Zotto mentioned is also available online:
http://www.landesmuseum.at/pdf_frei_remote/OestZPilz_17_0015-0024.pdf
Best wishes,
Gernot
Thanks for the confirmation.
No, did not have the paper you mention, but I've seen that is available on the red and I've downloaded. Now I'll have a look.
Un saludo
Susana