17-10-2025 18:45
Riet van Oosten
Hello, Found by Laurens van der Linde, Oct. 2025.
23-09-2025 13:31
Thomas Læssøehttps://svampe.databasen.org/observations/10534623
15-10-2025 16:39
Edvin Johannesen
These tiny (0.2-0.6 mm), white, pulvinate apotheci
03-10-2025 13:44
Riet van Oosten
Hello, Found by Laurens van der Linde on Populus
13-10-2025 19:05
Louis DENYBonjour forumSur tronc décortiqué de feuillu x,
11-10-2025 20:27
Marcel Heyligen
Found on a barked branch, 14 mm in diameter, of Ro
09-10-2025 22:14
S. RebeccaWe just had the Bavarian Mycology Conference in Au
10-10-2025 00:49
Ethan CrensonHello all, This was found last weekend on a hardw
Clypeosphaeria mamillana?
Jenny Seawright,
28-03-2015 00:09
Hello all, This was found on a dead Eupatorium stem and the closest I can come is possibly Clypeosphaeria mamillana, though in Ellis that is given for twigs of Acer, Cornus and Quercus. Perithecia initially immersed.
Spores becoming brown and faintly 3-septate, 20-24 x 6(-7) µm.Asci tips immediately blue in Lugols. (Is it correct to describe that as IKI+blue, euamyloid?) I tried adding KOH but wasn;t very successful ....
With regards,
Jenny
Alain GARDIENNET,
28-03-2015 06:27
Re : Clypeosphaeria mamillana?
Hi Jenny,
Yes it is, I think.
It has already been seen on Rubus, Rosa, Lonicera... why not Eupatorium ?
Alain
Jenny Seawright,
28-03-2015 09:40
Re : Clypeosphaeria mamillana?
Thank you Alain
Chris Yeates,
28-03-2015 17:06
Re : Clypeosphaeria mamillana?
Those brown septate / pseudoseptate (?) ascospores certainly look like those of a Clypeosphaeria. The only Clypeosphaeria species for which I have decent descriptions / images are this and C. notarisii. If anyone has access to Barr's paper in Systema Ascomycetum 8 (1989) it would be very useful . . . .
Cordialement
Chris
Cordialement
Chris